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/file/secondary_test.go

@@ -92,7 +92,7 @@ func TestShouldTransfer(t *testing.T) {
 		t.Fatalf("Unable to run shouldTransfer: %v", err)
 	}
 	if !should {
-		t.Fatalf("ShouldTransfer should return true for serial: %q", soa.serial-1)
+		t.Fatalf("ShouldTransfer should return true for serial: %d", soa.serial-1)
 	}
 	// Serial equal
 	z.SOA = test.SOA(fmt.Sprintf("%s IN SOA bla. bla. %d 0 0 0 0 ", testZone, soa.serial))