Dependencies check is failing for SNAPSHOT release PRs

[blakeli0]

In the SNAPSHOT release PR, the dependencies check is failing due to the following reasons

Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:3.5.0:enforce (enforce) on project gapic-generator-java: 
Error:  Rule 2: org.apache.maven.enforcer.rules.dependency.RequireUpperBoundDeps failed with message:
Error:  Failed while enforcing RequireUpperBoundDeps. The error(s) are [
Error:  Require upper bound dependencies error for com.google.api:api-common:2.62.0 paths to dependency are:
Error:  +-com.google.api:gapic-generator-java:2.72.0-SNAPSHOT
Error:    +-com.google.api:api-common:2.62.0
Error:  and
Error:  +-com.google.api:gapic-generator-java:2.72.0-SNAPSHOT
Error:    +-com.google.api:gax:2.80.0-SNAPSHOT
Error:      +-com.google.api:api-common:2.63.0-SNAPSHOT (managed) <-- com.google.api:api-common:2.63.0-SNAPSHOT
Error:  and
Error:  +-com.google.api:gapic-generator-java:2.72.0-SNAPSHOT
Error:    +-com.google.api:gax:2.80.0-SNAPSHOT:testlib
Error:      +-com.google.api:api-common:2.63.0-SNAPSHOT (managed) <-- com.google.api:api-common:2.63.0-SNAPSHOT

See error log for details.

Theoretically a SNAPSHOT release PR should not cause dependencies check failure. Looks like api-common's version is not managed by release-please somewhere, or release-please didn't upgrade it to the SNAPSHOT version correctly.