enable gofumpt formatter

Based on our discussion gofumpt won the vote so use that one via
golangci-lint.

https://github.com/containers/podman/discussions/27291

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

pkg/machine/compression/compression_test.go

@@ -13,7 +13,7 @@ func Test_compressionFromFile(t *testing.T) {
 	type args struct {
 		path string
 	}
-	var tests = []struct {
+	tests := []struct {
 		name string
 		args args
 		want ImageCompression