Consistent alloydb integration test authentication issues

[burkedavison]

Example of integration tests failing with credentials problems:
https://github.com/GoogleCloudPlatform/spring-cloud-gcp/actions/runs/9649922009/job/26614418186?pr=2977

Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:84)
	at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:52)
	... 63 more
Caused by: org.postgresql.util.PSQLException: FATAL: password authentication failed for user "postgres"

Also witnessed in now-closed PR: #2923

[meltsufin]

I don't think this is specific to alloydb. I see that cloudsql tests are failing too. This probably has to do with the db password being rotated.

[ttosta-google]

yeah the AlloyDB tests use the same password as the other databases

spring-cloud-gcp/.github/workflows/integrationTests.yaml

Line 92 in 759c616

DB_PASSWORD: ${{ secrets.SPRING_CLOUD_GCP_CI_DB_ROOT_PASSWORD }}

[meltsufin]

It should be fixed now.