chore(contributing): exclude spanner, bigquery, and other leaving packages from centralization

Author: chalmerlowe

packages/googleapis-common-protos/CONTRIBUTING.md

@@ -26,4 +26,4 @@ information on using pull requests.
 ## Community Guidelines
 
 This project follows
-[Google's Open Source Community Guidelines](https://opensource.google/conduct/).
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).

packages/sqlalchemy-spanner/requirements.txt

@@ -826,9 +826,9 @@ sqlalchemy==2.0.51 \
     # via
     #   -r requirements.in
     #   alembic
-sqlparse==0.5.5 \
-    --hash=sha256:12a08b3bf3eec877c519589833aed092e2444e68240a3577e8e26148acc7b1ba \
-    --hash=sha256:e20d4a9b0b8585fdf63b10d30066c7c94c5d7a7ec47c889a2d83a3caa93ff28e
+sqlparse==0.6.0 \
+    --hash=sha256:113c35c75365ab9cc9c7231d68c6428fb11c085fc8e9eb1ad659b7ddbf6cd2b9 \
+    --hash=sha256:b861c0288ce2fa56209a9a6412d2e066ac664b3873b89c26c9d8415e8e32996f
     # via google-cloud-spanner
 tomli==2.4.1 \
     --hash=sha256:01f520d4f53ef97964a240a035ec2a869fe1a37dde002b57ebc4417a27ccd853 \