Bump google-api-core[grpc] from 2.11.1 to 2.12.0 in /requirements (#21223)

Bumps [google-api-core[grpc]](https://github.com/googleapis/python-api-core) from 2.11.1 to 2.12.0.
- [Release notes](https://github.com/googleapis/python-api-core/releases)
- [Changelog](https://github.com/googleapis/python-api-core/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/python-api-core/compare/v2.11.1...v2.12.0)

---
updated-dependencies:
- dependency-name: google-api-core[grpc]
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/prod.txt

@@ -600,9 +600,9 @@ google-cloud-bigquery==3.11.4 \
 google-auth==2.23.0 \
     --hash=sha256:2cec41407bd1e207f5b802638e32bb837df968bb5c05f413d0fa526fac4cf7a7 \
     --hash=sha256:753a26312e6f1eaeec20bc6f2644a10926697da93446e1f8e24d6d32d45a922a
-google-api-core[grpc]==2.11.1 \
-    --hash=sha256:25d29e05a0058ed5f19c61c0a78b1b53adea4d9364b464d014fbda941f6d1c9a \
-    --hash=sha256:d92a5a92dc36dd4f4b9ee4e55528a90e432b059f93aee6ad857f9de8cc7ae94a
+google-api-core[grpc]==2.12.0 \
+    --hash=sha256:c22e01b1e3c4dcd90998494879612c38d0a3411d1f7b679eb89e2abe3ce1f553 \
+    --hash=sha256:ec6054f7d64ad13b41e43d96f735acbd763b0f3b695dabaa2d579673f6a6e160
 google-cloud-core==2.3.3 \
     --hash=sha256:37b80273c8d7eee1ae816b3a20ae43585ea50506cb0e60f3cf5be5f87f1373cb \
     --hash=sha256:fbd11cad3e98a7e5b0343dc07cb1039a5ffd7a5bb96e1f1e27cee4bda4a90863