chore(main): release firestore 1.19.0

[release-please[bot]]

:robot: I have created a release beep boop

1.19.0 (2025-06-18)

Features

• firestore/apiv1: Add filter argument to FirestoreAdmin.ListBackupsRequest (a694e11)
• firestore/apiv1: Add the UserCreds API (20f762c)
• firestore/apiv1: New Firestore index modes and Database Editions (8d466c4)
• firestore: Add String() method to DocumentChangeKind type (#11580) (6911739)
• firestore: Introduce DocFromResourceName for full resource paths (#12307) (f7ee0b2)

Bug Fixes

• firestore/apiv1: Bump default deadline on CreateDatabase and RestoreDatabase to 2 minutes (a694e11)
• firestore: Allow queries with != NaN and return correct documents when filtering by != nil (#11649) (603bf21)
• firestore: Convert key before seeting map entry (#11506) (1438255)
• firestore: Update golang.org/x/net to 0.37.0 (1144978)
• firestore: Update google.golang.org/api to 0.229.0 (3319672)

Documentation

• firestore: Minor documentation changes for distance_threshold (1eb601e)
• firestore: Minor documentation updates to StructuredQuery (1eb601e)

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[bhshkh]

Will merge when https://github.com/googleapis/google-cloud-go/pull/11506 is added to release notes

[release-please[bot]]

🤖 Created releases:

• firestore/v1.19.0

:sunflower: