* chore: add release-please config for protobuf-4.x

* Change release type from java-backport to java-yoshi

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

…3131)

* feat: Add picosecond timestamp support for Json to Proto converter

* chore: Add edge cases for user input

* chore: Fix lint issues

* chore: Disable check for v1beta2

* chore: generate libraries at Wed Dec 10 15:59:07 UTC 2025

* chore: Address PR feedback

* chore: generate libraries at Wed Dec 10 19:01:14 UTC 2025

* chore: Fix timestamp precision check condition

---------

Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

…v3.54.2 (#3137)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [googleapis/sdk-platform-java](https://redirect.github.com/googleapis/sdk-platform-java) | action | patch | `v2.64.1` -> `v2.64.2` |

---

### Release Notes

<details>
<summary>googleapis/sdk-platform-java (googleapis/sdk-platform-java)</summary>

### [`v2.64.2`](https://redirect.github.com/googleapis/sdk-platform-java/releases/tag/v2.64.2)

[Compare Source](https://redirect.github.com/googleapis/sdk-platform-java/compare/v2.64.1...v2.64.2)

##### Bug Fixes

- add per-service api\_version to gapic\_metadata ([#&#8203;3984](https://redirect.github.com/googleapis/sdk-platform-java/issues/3984)) ([d589306](https://redirect.github.com/googleapis/sdk-platform-java/commit/d589306c4ecc12a2a744cb9dfb914ccea8fb34fd))

##### Dependencies

- Upgrade auth to 1.41.0. ([#&#8203;4008](https://redirect.github.com/googleapis/sdk-platform-java/issues/4008)) ([833b3e5](https://redirect.github.com/googleapis/sdk-platform-java/commit/833b3e54c0f13ac8183a639c4464dcf58fd44096))
- upgrade grpc to 1.76.1 ([#&#8203;3993](https://redirect.github.com/googleapis/sdk-platform-java/issues/3993)) ([958611e](https://redirect.github.com/googleapis/sdk-platform-java/commit/958611e23460dba596160f3224d8588afdba6bc2))
- Upgrade grpc to 1.76.2 ([#&#8203;4006](https://redirect.github.com/googleapis/sdk-platform-java/issues/4006)) ([a8060a2](https://redirect.github.com/googleapis/sdk-platform-java/commit/a8060a263ba34556b8d4d347a57625849a6859bc))

</details>

---

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♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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* test: Close resources after tests run

* chore: generate libraries at Thu Dec 11 21:24:33 UTC 2025

* chore: Fix failing IT test case

---------

Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

* chore(main): release 3.19.0

* chore: generate libraries at Fri Dec 12 01:49:55 UTC 2025

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>
Co-authored-by: Blake Li <blakeli@google.com>