core: upgrade Go requirement to 1.26.0 (#8466)

* core: upgrade Go requirement to 1.26.0

As golang 1.27 has been released, this PR
- Bump Go version requirement to 1.26.0
- Update Go build version to 1.27.0

This is also for solving the issue encountered in 8092 of k8s update

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Bump golang ci

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Migrate faillint to forbidigo, as failint has not bee updated for more than a year

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

---------

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

plugin/quic/setup_test.go

@@ -36,7 +36,7 @@ func TestQuicSetup(t *testing.T) {
 				max_streams 100
 			}`,
 			shouldErr:              false,
-			expectedMaxStreams:     pint(100),
+			expectedMaxStreams:     new(100),
 			expectedWorkerPoolSize: nil,
 		},
 		{
@@ -45,7 +45,7 @@ func TestQuicSetup(t *testing.T) {
 			}`,
 			shouldErr:              false,
 			expectedMaxStreams:     nil,
-			expectedWorkerPoolSize: pint(1000),
+			expectedWorkerPoolSize: new(1000),
 		},
 		{
 			input: `quic {
@@ -53,8 +53,8 @@ func TestQuicSetup(t *testing.T) {
 				worker_pool_size 1000
 			}`,
 			shouldErr:              false,
-			expectedMaxStreams:     pint(100),
-			expectedWorkerPoolSize: pint(1000),
+			expectedMaxStreams:     new(100),
+			expectedWorkerPoolSize: new(1000),
 		},
 		{
 			input: `quic {
@@ -133,7 +133,7 @@ func TestQuicSetup(t *testing.T) {
 			}`,
 			shouldErr:          true,
 			expectedErrContent: "already defined",
-			expectedMaxStreams: pint(100),
+			expectedMaxStreams: new(100),
 		},
 		{
 			input: `quic {
@@ -142,7 +142,7 @@ func TestQuicSetup(t *testing.T) {
 			}`,
 			shouldErr:              true,
 			expectedErrContent:     "already defined",
-			expectedWorkerPoolSize: pint(1000),
+			expectedWorkerPoolSize: new(1000),
 		},
 		{
 			input: `quic {
@@ -239,6 +239,4 @@ func formatNilableInt(v *int) string {
 	return fmt.Sprintf("%d", *v)
 }
 
-func pint(i int) *int {
-	return &i
-}
+//go:fix inline