PR googleapis#2288 broke the Travis build since the key stored (from 2014)
didn't have the project ID as a value.

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](googleapis/python-bigquery-dataframes@v2.29.0...v2.30.0)
(2025-12-03)

### Features

* Support mixed scalar-analytic expressions (#2239)
([20ab469d](googleapis/python-bigquery-dataframes@20ab469d))

* Allow drop_duplicates over unordered dataframe (#2303)
([52665fa5](googleapis/python-bigquery-dataframes@52665fa5))

* Preserve source names better for more readable sql (#2243)
([64995d65](googleapis/python-bigquery-dataframes@64995d65))

* use end user credentials for `bigframes.bigquery.ai` functions when
`connection_id` is not present (#2272)
([7c062a68](googleapis/python-bigquery-dataframes@7c062a68))

* pivot_table supports fill_value arg (#2257)
([8f490e68](googleapis/python-bigquery-dataframes@8f490e68))

* Support builtins funcs for df.agg (#2256)
([956a5b00](googleapis/python-bigquery-dataframes@956a5b00))

* add bigquery.json_keys (#2286)
([b487cf1f](googleapis/python-bigquery-dataframes@b487cf1f))

* Add agg/aggregate methods to windows (#2288)
([c4cb39dc](googleapis/python-bigquery-dataframes@c4cb39dc))

* Add bigframes.pandas.crosstab (#2231)
([c62e5535](googleapis/python-bigquery-dataframes@c62e5535))

* Implement single-column sorting for interactive table widget (#2255)
([d1ecc61b](googleapis/python-bigquery-dataframes@d1ecc61b))

### Bug Fixes

* Pass credentials properly for read api instantiation (#2280)
([3e3fe259](googleapis/python-bigquery-dataframes@3e3fe259))

* Update max_instances default to reflect actual value (#2302)
([4489687e](googleapis/python-bigquery-dataframes@4489687e))

* Improve Anywidget pagination and display for unknown row counts
(#2258)
([508deae5](googleapis/python-bigquery-dataframes@508deae5))

* Fix issue with stream upload batch size upload limit (#2290)
([6cdf64b0](googleapis/python-bigquery-dataframes@6cdf64b0))

* calling info() on empty dataframes no longer leads to errors (#2267)
([95a83f77](googleapis/python-bigquery-dataframes@95a83f77))

* do not warn with DefaultIndexWarning in partial ordering mode (#2230)
([cc2dbae6](googleapis/python-bigquery-dataframes@cc2dbae6))

### Documentation

* update docs and tests for Gemini 2.5 models (#2279)
([08c0c0c8](googleapis/python-bigquery-dataframes@08c0c0c8))

* Add Google Analytics configuration to conf.py (#2301)
([0b266da1](googleapis/python-bigquery-dataframes@0b266da1))

* fix LogisticRegression docs rendering (#2295)
([32e53134](googleapis/python-bigquery-dataframes@32e53134))

* update API reference to new `dataframes.bigquery.dev` location (#2293)
([da064397](googleapis/python-bigquery-dataframes@da064397))

* use autosummary to split documentation pages (#2251)
([f7fd2d20](googleapis/python-bigquery-dataframes@f7fd2d20))

</details>