chore(main): release 1.21.0

[release-please[bot]]

:robot: I have created a release beep boop

1.21.0 (2024-09-30)

Features

• Support for CAS server certificate authority. (#2060) (4332ffc)

Dependencies

• Update Non-major dependencies (#2055) (be764dc)
• Update Non-major dependencies (#2072) (d834afe)

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This PR was generated with Release Please. See documentation.

[release-please[bot]]

:robot: Created releases:

• v1.21.0 :sunflower:

[release-trigger[bot]]

Triggered job: cloud-devrel/client-libraries/java/cloud-sql-jdbc-socket-factory/release/stage (2024-10-01T19:51:13.926Z)

To trigger again, remove the autorelease: triggered label (in a few minutes).

[release-tool-publish-reporter[bot]]

The release build has started, the log can be viewed here. :sunflower:

[release-tool-publish-reporter[bot]]

:egg: You hatched a release! The release build finished successfully! :purple_heart: