PR created by the Librarian CLI to initialize a release. Merging this PR
will auto trigger a release.

Librarian Version: v0.7.0
Language Image:
us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:c8612d3fffb3f6a32353b2d1abd16b61e87811866f7ec9d65b59b02eb452a620
<details><summary>bigframes: 2.30.0</summary>

##
[2.30.0](v2.29.0...v2.30.0)
(2025-12-03)

### Features

* Support mixed scalar-analytic expressions (#2239)
([20ab469](20ab469d))

* Allow drop_duplicates over unordered dataframe (#2303)
([52665fa](52665fa5))

* Preserve source names better for more readable sql (#2243)
([64995d6](64995d65))

* use end user credentials for `bigframes.bigquery.ai` functions when
`connection_id` is not present (#2272)
([7c062a6](7c062a68))

* pivot_table supports fill_value arg (#2257)
([8f490e6](8f490e68))

* Support builtins funcs for df.agg (#2256)
([956a5b0](956a5b00))

* add bigquery.json_keys (#2286)
([b487cf1](b487cf1f))

* Add agg/aggregate methods to windows (#2288)
([c4cb39d](c4cb39dc))

* Add bigframes.pandas.crosstab (#2231)
([c62e553](c62e5535))

* Implement single-column sorting for interactive table widget (#2255)
([d1ecc61](d1ecc61b))

### Bug Fixes

* Pass credentials properly for read api instantiation (#2280)
([3e3fe25](3e3fe259))

* Update max_instances default to reflect actual value (#2302)
([4489687](4489687e))

* Improve Anywidget pagination and display for unknown row counts
(#2258)
([508deae](508deae5))

* Fix issue with stream upload batch size upload limit (#2290)
([6cdf64b](6cdf64b0))

* calling info() on empty dataframes no longer leads to errors (#2267)
([95a83f7](95a83f77))

* do not warn with DefaultIndexWarning in partial ordering mode (#2230)
([cc2dbae](cc2dbae6))

### Documentation

* update docs and tests for Gemini 2.5 models (#2279)
([08c0c0c](08c0c0c8))

* Add Google Analytics configuration to conf.py (#2301)
([0b266da](0b266da1))

* fix LogisticRegression docs rendering (#2295)
([32e5313](32e53134))

* update API reference to new `dataframes.bigquery.dev` location (#2293)
([da06439](da064397))

* use autosummary to split documentation pages (#2251)
([f7fd2d2](f7fd2d20))

</details>