deps: update dependency com.puppycrawl.tools:checkstyle to v9 (#369)
deps: update dependency com.puppycrawl.tools:checkstyle to v9 (#369)

Co-authored-by: Dina Graves Portman <2277a8760bebe9a4c765e5e192e566b26453c863@google.com>
googleapis/java-grafeas,googleapis/java-grafeas,googleapis/java-grafeas