chore: add copyright header to expected query in test (#1348)

Fixes the build error in #1345

This test failure is caused by the recent update that ensures that PostgreSQL-dialect queries also send all comments to Cloud Spanner, which means that the expected query in this test has changed.

src/test/java/com/google/cloud/spanner/jdbc/PartitionedQueryMockServerTest.java

@@ -411,7 +411,23 @@ public void testAutoPartitionMode() throws SQLException {
           mockSpanner.putPartialStatementResult(
               StatementResult.query(
                   Statement.of(
-                      "SELECT TABLE_CATALOG AS \"TABLE_CAT\", TABLE_SCHEMA AS \"TABLE_SCHEM\", TABLE_NAME AS \"TABLE_NAME\",\n"
+                      "/*\n"
+                          + " * Copyright 2022 Google LLC\n"
+                          + " *\n"
+                          + " * Licensed under the Apache License, Version 2.0 (the \"License\");\n"
+                          + " * you may not use this file except in compliance with the License.\n"
+                          + " * You may obtain a copy of the License at\n"
+                          + " *\n"
+                          + " *       http://www.apache.org/licenses/LICENSE-2.0\n"
+                          + " *\n"
+                          + " * Unless required by applicable law or agreed to in writing, software\n"
+                          + " * distributed under the License is distributed on an \"AS IS\" BASIS,\n"
+                          + " * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n"
+                          + " * See the License for the specific language governing permissions and\n"
+                          + " * limitations under the License.\n"
+                          + " */\n"
+                          + "\n"
+                          + "SELECT TABLE_CATALOG AS \"TABLE_CAT\", TABLE_SCHEMA AS \"TABLE_SCHEM\", TABLE_NAME AS \"TABLE_NAME\",\n"
                           + "       CASE WHEN TABLE_TYPE = 'BASE TABLE' THEN 'TABLE' ELSE TABLE_TYPE END AS \"TABLE_TYPE\",\n"
                           + "       NULL AS \"REMARKS\", NULL AS \"TYPE_CAT\", NULL AS \"TYPE_SCHEM\", NULL AS \"TYPE_NAME\",\n"
                           + "       NULL AS \"SELF_REFERENCING_COL_NAME\", NULL AS \"REF_GENERATION\"\n"