test: add missing space in query (#2001)

src/test/java/com/google/cloud/spanner/pgadapter/ITJdbcDescribeStatementTest.java

@@ -389,7 +389,7 @@ public void testDescribeInvalidStatements() throws SQLException {
               + "and col_numeric=? "
               + "and col_timestamptz=? "
               + "and col_date=? "
-              + "and col_varchar=?"
+              + "and col_varchar=? "
               + "and borked='really borked'"
         }) {
       try (Connection connection = DriverManager.getConnection(getConnectionUrl())) {