Fixes googleapis#2512.

…-info-reports-plugin to v3.6.0 (#2531)

* build(deps): update dependency org.apache.maven.plugins:maven-project-info-reports-plugin to v3.6.0

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Phong Chuong <147636638+PhongChuong@users.noreply.github.com>

In this PR:
- Add `generate_pr_description.py` to get commit messages from
googleapis repository.
- Parse configuration to get latest googleapis commit (C) and proto_path
(P).
- Combine commit message from C to a baseline commit (B), exclusively.
Only commits that change files in P are considered.
- Add unit tests for utility functions.
- Add integration tests for `generate_pr_description.py`.

This is [step
5](https://docs.google.com/document/d/1JiCcG3X7lnxaJErKe0ES_JkyU7ECb40nf2Xez3gWvuo/edit?pli=1&tab=t.0#bookmark=id.g8qkyq11ygpx)
in milestone 2 of hermetic build project.

In this PR:
- Write PR description into a file which lives the same directory with
the configuration.

Context:
After #2531, we can generate pull request description from generation
config and a baseline commit.

However, the return value (string) can not be retrieved when running in
docker environment. Therefore, write the description to a file. Put
multi-line description to a file also helps editing the pr body
([link](cli/cli#595 (comment))).

🤖 I have created a release *beep* *boop*
---


<details><summary>2.38.0</summary>

##
[2.38.0](googleapis/sdk-platform-java@v2.37.0...v2.38.0)
(2024-03-15)


### Features

* [common-protos] add `api_version` extension to `ServiceOptions`, for
collaborative versioning
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* [common-protos] add `api_version` extension to `ServiceOptions`, for
collaborative versioning
([#2551](googleapis/sdk-platform-java#2551))
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* add `ErrorReason.LOCATION_POLICY_VIOLATED` enum value
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* add `ErrorReason.LOCATION_POLICY_VIOLATED` enum value
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* add `Publishing.rest_reference_documentation_uri` to aid client
library publication
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* add `Publishing.rest_reference_documentation_uri` to aid client
library publication
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* Add shopping and chat common protos.
([#2553](googleapis/sdk-platform-java#2553))
([14769d3](googleapis/sdk-platform-java@14769d3)),
closes
[#2018](googleapis/sdk-platform-java#2018)
* get PR description from googleapis commits
([#2531](googleapis/sdk-platform-java#2531))
([d26580c](googleapis/sdk-platform-java@d26580c))
* Introduce OpenTelemetry Metrics Recording
([#2500](googleapis/sdk-platform-java#2500))
([27c3a20](googleapis/sdk-platform-java@27c3a20))
* skip build only commit
([#2555](googleapis/sdk-platform-java#2555))
([002790e](googleapis/sdk-platform-java@002790e))
* Universe Domain Environment Variable Support
([#2485](googleapis/sdk-platform-java#2485))
([b2b0414](googleapis/sdk-platform-java@b2b0414))


### Dependencies

* normalize dependencies
([#2574](googleapis/sdk-platform-java#2574))
([bd10d40](googleapis/sdk-platform-java@bd10d40))
* update arrow.version to v15.0.1
([#2565](googleapis/sdk-platform-java#2565))
([a652d47](googleapis/sdk-platform-java@a652d47))
* update dependency com.fasterxml.jackson:jackson-bom to v2.17.0
([#2564](googleapis/sdk-platform-java#2564))
([f099a56](googleapis/sdk-platform-java@f099a56))
* update dependency com.google.api-client:google-api-client-bom to
v2.4.0
([#2570](googleapis/sdk-platform-java#2570))
([720a917](googleapis/sdk-platform-java@720a917))
* update dependency com.google.errorprone:error_prone_annotations to
v2.26.1
([#2530](googleapis/sdk-platform-java#2530))
([545dfa1](googleapis/sdk-platform-java@545dfa1))
* update dependency com.google.errorprone:error_prone_annotations to
v2.26.1
([#2532](googleapis/sdk-platform-java#2532))
([8861143](googleapis/sdk-platform-java@8861143))
* update dependency io.netty:netty-tcnative-boringssl-static to
v2.0.65.final
([#2547](googleapis/sdk-platform-java#2547))
([b516f3c](googleapis/sdk-platform-java@b516f3c))
* update dependency net.bytebuddy:byte-buddy to v1.14.12
([#2522](googleapis/sdk-platform-java#2522))
([60b5626](googleapis/sdk-platform-java@60b5626))
* update google api dependencies
([#2484](googleapis/sdk-platform-java#2484))
([3ed98b1](googleapis/sdk-platform-java@3ed98b1))
* update google api dependencies
([#2538](googleapis/sdk-platform-java#2538))
([7f5f925](googleapis/sdk-platform-java@7f5f925))
* update googleapis/java-cloud-bom digest to 3f93d58
([#2499](googleapis/sdk-platform-java#2499))
([d557d96](googleapis/sdk-platform-java@d557d96))
* update googleapis/java-cloud-bom digest to 659764f
([#2545](googleapis/sdk-platform-java#2545))
([144e461](googleapis/sdk-platform-java@144e461))
* update netty dependencies
([#2480](googleapis/sdk-platform-java#2480))
([d43592b](googleapis/sdk-platform-java@d43592b))
* update opentelemetry-java monorepo to v1.35.0
([#2477](googleapis/sdk-platform-java#2477))
([e34028f](googleapis/sdk-platform-java@e34028f))
* update opentelemetry-java monorepo to v1.36.0
([#2550](googleapis/sdk-platform-java#2550))
([31737f2](googleapis/sdk-platform-java@31737f2))
* update opentelemetry-java monorepo to v1.36.0
([#2573](googleapis/sdk-platform-java#2573))
([4653e2c](googleapis/sdk-platform-java@4653e2c))
* update slf4j monorepo to v2.0.12
([#2481](googleapis/sdk-platform-java#2481))
([29332ce](googleapis/sdk-platform-java@29332ce))


### Documentation

* minor tweaks to various comments
([95fd22c](googleapis/sdk-platform-java@95fd22c))
* minor tweaks to various comments
([95fd22c](googleapis/sdk-platform-java@95fd22c))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>