Merge branch 'main' into jdbc/otel-clean-branch

java-bigquery/google-cloud-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryConnection.java

@@ -145,6 +145,7 @@ public class BigQueryConnection extends BigQueryNoOpsConnection {
   OpenTelemetry customOpenTelemetry;
   Tracer tracer =
       OpenTelemetry.noop().getTracer(BigQueryJdbcOpenTelemetry.INSTRUMENTATION_SCOPE_NAME);
+  DatabaseMetaData databaseMetaData;
 
   BigQueryConnection(String url) throws IOException {
     this(url, DataSource.fromUrl(url));