Add support for jdbc:firebird: url prefix

See gh-15841

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jdbc/DatabaseDriver.java

@@ -140,7 +140,7 @@ public enum DatabaseDriver {
 
 		@Override
 		protected Collection<String> getUrlPrefixes() {
-			return Collections.singleton("firebirdsql");
+			return Arrays.asList("firebirdsql", "firebird");
 		}
 
 		@Override

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/DatabaseDriverTests.java

@@ -129,6 +129,8 @@ public class DatabaseDriverTests {
 				.isEqualTo(DatabaseDriver.SQLSERVER);
 		assertThat(DatabaseDriver.fromJdbcUrl("jdbc:firebirdsql://localhost/sample"))
 				.isEqualTo(DatabaseDriver.FIREBIRD);
+		assertThat(DatabaseDriver.fromJdbcUrl("jdbc:firebird://localhost/sample"))
+				.isEqualTo(DatabaseDriver.FIREBIRD);
 		assertThat(DatabaseDriver.fromJdbcUrl("jdbc:db2://localhost:50000/sample "))
 				.isEqualTo(DatabaseDriver.DB2);
 		assertThat(DatabaseDriver.fromJdbcUrl("jdbc:as400://localhost"))