Merge pull request #38924 from skcskitano

* pr/38924:
  Fix connection leak in SqlDialectLookup

Closes gh-38924

Author: mhalbritter

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jooq/SqlDialectLookup.java

@@ -46,8 +46,7 @@ private SqlDialectLookup() {
 	 * @return the most suitable {@link SQLDialect}
 	 */
 	static SQLDialect getDialect(DataSource dataSource) {
-		try {
-			Connection connection = (dataSource != null) ? dataSource.getConnection() : null;
+		try (Connection connection = (dataSource != null) ? dataSource.getConnection() : null) {
 			return JDBCUtils.dialect(connection);
 		}
 		catch (SQLException ex) {