chore: update dependency com.google.cloud:sdk-platform-java-config to v3.27.0 (#2169)

Author: renovate-bot

.github/workflows/unmanaged_dependency_check.yaml

@@ -14,6 +14,6 @@ jobs:
       shell: bash
       run: .kokoro/build.sh
     - name: Unmanaged dependency check
-      uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v3.23.0
+      uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v3.27.0
       with:
         bom-path: google-cloud-bigtable-bom/pom.xml