update port for jdbc test (#38485)

* increase timeout

switch to minute :)

* check post commit

* try adding back nat for one test case

* try getting port instead

* revert time change

Author: derrickaw

.github/trigger_files/beam_PostCommit_XVR_Direct.json

@@ -1,3 +1,3 @@
 {
-  "modification": 5
+  "modification": 1
 }

sdks/go/test/integration/io/xlang/jdbc/jdbc_test.go

@@ -32,6 +32,7 @@ import (
 	"github.com/apache/beam/sdks/v2/go/test/integration/internal/containers"
 	_ "github.com/go-sql-driver/mysql"
 	_ "github.com/lib/pq"
+	"strings"
 	"github.com/testcontainers/testcontainers-go/wait"
 )
 
@@ -60,7 +61,8 @@ func setupTestContainer(ctx context.Context, t *testing.T, dbname, username, pas
 	hostname := "localhost"
 
 	dbURL := func(host string, port string) string {
-		return fmt.Sprintf("postgres://%s:%s@%s:%s/%s?sslmode=disable", username, password, host, port, dbname)
+		cleanPort := strings.Split(port, "/")[0]
+		return fmt.Sprintf("postgres://%s:%s@%s:%s/%s?sslmode=disable", username, password, host, cleanPort, dbname)
 	}
 	waitStrategy := wait.ForSQL(postgresPort, "postgres", dbURL).WithStartupTimeout(time.Second * 5)