Bump golangci-lint to v1.60, fix new warnings

The warnings fixed were:

libcontainer/configs/config_test.go:205:12: printf: non-constant format string in call to (*testing.common).Errorf (govet)
		t.Errorf(fmt.Sprintf("Expected error to not occur but it was %+v", err))
		         ^
libcontainer/cgroups/fs/blkio_test.go:481:13: printf: non-constant format string in call to (*testing.common).Errorf (govet)
			t.Errorf(fmt.Sprintf("test case '%s' failed unexpectedly: %s", testCase.desc, err))
			         ^
libcontainer/cgroups/fs/blkio_test.go:595:13: printf: non-constant format string in call to (*testing.common).Errorf (govet)
			t.Errorf(fmt.Sprintf("test case '%s' failed unexpectedly: %s", testCase.desc, err))
			         ^

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.github/workflows/validate.yml

@@ -40,7 +40,7 @@ jobs:
           sudo apt -qy install libseccomp-dev
       - uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.59
+          version: v1.60
       # Extra linters, only checking new code from a pull request.
       - name: lint-extra
         if: github.event_name == 'pull_request'

libcontainer/cgroups/fs/blkio_test.go

@@ -1,7 +1,6 @@
 package fs
 
 import (
-	"fmt"
 	"strconv"
 	"testing"
 
@@ -478,7 +477,7 @@ func TestBlkioStatsNoFilesBFQDebug(t *testing.T) {
 		actualStats := *cgroups.NewStats()
 		err := cpuset.GetStats(path, &actualStats)
 		if err != nil {
-			t.Errorf(fmt.Sprintf("test case '%s' failed unexpectedly: %s", testCase.desc, err))
+			t.Errorf("%s: want no error, got: %+v", testCase.desc, err)
 		}
 	}
 }
@@ -592,7 +591,7 @@ func TestBlkioStatsNoFilesCFQ(t *testing.T) {
 		actualStats := *cgroups.NewStats()
 		err := cpuset.GetStats(path, &actualStats)
 		if err != nil {
-			t.Errorf(fmt.Sprintf("test case '%s' failed unexpectedly: %s", testCase.desc, err))
+			t.Errorf("%s: want no error, got %+v", testCase.desc, err)
 		}
 	}
 }

libcontainer/configs/config_test.go

@@ -202,7 +202,7 @@ exit 0
 	})
 
 	if err := cmdHook.Run(state); err != nil {
-		t.Errorf(fmt.Sprintf("Expected error to not occur but it was %+v", err))
+		t.Errorf("Want no error, got: %+v", err)
 	}
 }