deps: update dependency com.google.cloud:google-cloud-bom to v0.159.0 (#341)
deps: update dependency com.google.cloud:google-cloud-bom to v0.159.0 (#341)

* deps: update dependency com.google.cloud:google-cloud-bom to v0.159.0

* deps: bump com.google.protobuf:protobuf-java to 3.17.3

Update gen-conformance-protos profile to have the version of protobuf-java
in sync with shared-dependencies

Co-authored-by: BenWhitehead <6e442f8aef2389ef8b365869b3f123696bedec26@users.noreply.github.com>
googleapis/java-conformance-tests,googleapis/java-conformance-tests,googleapis/java-conformance-tests