3.x: error-prone needs to compile with jdk 17 since 2.32.0

Context from error-prone release note: https://github.com/google/error-prone/releases/tag/v2.32.0

See https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/3318 for ci failures for error-prone updates in 3.x

Read the Error Prone 2.32.0 release note and PR #3318 first, then inspect the 3.x build configuration and CI failure they reference. Done means the 3.x branch compiles with the required Error Prone version on JDK 17 and the relevant CI check passes.

Written by the indexing model from the issue text.