Bump google-api-core from 2.11.1 to 2.12.0

Bumps [google-api-core](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](googleapis/python-api-core@v2.11.1...v2.12.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -3,7 +3,7 @@ certifi==2023.7.22
 charset-normalizer==3.2.0
 configparser==6.0.0
 fitbit==0.3.1
-google-api-core==2.11.1
+google-api-core==2.12.0
 google-api-python-client==2.100.0
 google-auth==2.23.0
 google-auth-httplib2==0.1.1