chore: fix all lint issue since golangci-lint bump (#21326)

tests/integration/slashing/slashing_test.go

@@ -114,5 +114,5 @@ func TestSlashingMsgs(t *testing.T) {
 	headerInfo = header.Info{Height: app.LastBlockHeight() + 1}
 	_, _, err = sims.SignCheckDeliver(t, txConfig, app.BaseApp, headerInfo, []sdk.Msg{unjailMsg}, "", []uint64{0}, []uint64{1}, false, false, priv1)
 	require.Error(t, err)
-	require.True(t, errors.Is(types.ErrValidatorNotJailed, err))
+	require.True(t, errors.Is(err, types.ErrValidatorNotJailed))
 }

tests/systemtests/system.go

@@ -247,7 +247,7 @@ func (s *SystemUnderTest) AwaitUpgradeInfo(t *testing.T) {
 			case err == nil:
 				found = true
 			case !os.IsNotExist(err):
-				t.Fatalf(err.Error())
+				t.Fatal(err.Error())
 			}
 		})
 		time.Sleep(s.blockTime / 2)