* changes without context

* build(python): update docfx job to use new plugin

Source-Author: Dan Lee <71398022+dandhlee@users.noreply.github.com>
Source-Date: Tue Mar 30 19:36:37 2021 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 4501974ad08b5d693311457e2ea4ce845676e329
Source-Link: googleapis/synthtool@4501974

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/1913c2ca-caa3-45bd-8d6a-b1a99a9c1e2a/targets

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PiperOrigin-RevId: 365829960
Source-Link: googleapis/googleapis@7c8d161

* changes without context

        autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* chore: Add license headers for python config files

Source-Author: Anthonios Partheniou <partheniou@google.com>
Source-Date: Tue Apr 6 11:32:03 2021 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 5b5bf6d519b2d658d9f2e483d9f6f3d0ba8ee6bc
Source-Link: googleapis/synthtool@5b5bf6d

* chore: prevent normalization of semver versioning

* chore: update workaround to make sic work

reverts previous commit for preventing normalization of versioning

Co-authored-by: google-cloud-policy-bot[bot] <80869356+google-cloud-policy-bot[bot]@users.noreply.github.com>

This PR migrates from autosynth to [owl bot](https://github.com/googleapis/repo-automation-bots/tree/master/packages/owl-bot).  owl bot will save time for maintainers as it will automatically open PRs when there are updates in [googleapis-gen](https://github.com/googleapis/googleapis-gen/tree/master/google) without requiring maintainers to run `synthtool` to build the client from protos. Additionally, similar to autosynth, PRs will be automatically opened when there are template updates.

PiperOrigin-RevId: 373649163

Source-Link: googleapis/googleapis@7e1b14e

Source-Link: https://github.com/googleapis/googleapis-gen/commit/0a3c7d272d697796db75857bac73905c68e498c3

Add packaging requirement. packaging.version
              is used for a version comparison in transports/base.py and is needed after the upgrade to gapic-generator-python 0.46.3

gcr.io/repo-automation-bots/owlbot-python:latest@sha256:4c981a6b6f2b8914a448d7b3a01688365be03e3ed26dfee399a6aa77fb112eaa

gcr.io/repo-automation-bots/owlbot-python:latest@sha256:3c3a445b3ddc99ccd5d31edc4b4519729635d20693900db32c4f587ed51f7479

gcr.io/repo-automation-bots/owlbot-python:latest@sha256:0856ca711da1fd5ec9d6d7da6c50aa0bbf550fb94acb47b55159a640791987bf

Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:c66ba3c8d7bc8566f47df841f98cd0097b28fff0b1864c86f5817f4c8c3e8600

🤖 I have created a release \*beep\* \*boop\*
---
### [0.2.1](https://www.github.com/googleapis/python-recommendations-ai/compare/v0.2.0...v0.2.1) (2021-05-28)


### Bug Fixes

* **deps:** add packaging requirement ([#46](https://www.github.com/googleapis/python-recommendations-ai/issues/46)) ([d2eb28f](https://www.github.com/googleapis/python-recommendations-ai/commit/d2eb28fdc016de1b9f82e46f36b8bf8c8bb7edbd))
---


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