Bump google-api-core from 2.19.2 to 2.20.0

Bumps [google-api-core](https://github.com/googleapis/python-api-core) from 2.19.2 to 2.20.0.
- [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@v2.19.2...v2.20.0)

---
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

@@ -10,7 +10,7 @@ charset-normalizer==2.0.12
 chess==1.10.0
 cssselect2==0.7.0
 frozenlist==1.4.1
-google-api-core==2.19.2
+google-api-core==2.20.0
 google-api-python-client==2.146.0 
 google-auth==2.34.0
 google-auth-httplib2==0.2.0