Maintenance: add more linters to .golangci.yml

internal/constants/servers_test.go

@@ -12,6 +12,7 @@ import (
 )
 
 func digestServerModelVersion(t *testing.T, server interface{}, version uint16) string {
+	t.Helper()
 	bytes, err := json.Marshal(server)
 	if err != nil {
 		t.Fatal(err)
@@ -118,6 +119,7 @@ func Test_versions(t *testing.T) {
 }
 
 func digestServersTimestamp(t *testing.T, servers interface{}, timestamp int64) string {
+	t.Helper()
 	bytes, err := json.Marshal(servers)
 	if err != nil {
 		t.Fatal(err)

internal/provider/utils/filtering_test.go

@@ -28,6 +28,7 @@ func Test_FilterByPossibilities(t *testing.T) {
 	for name, testCase := range testCases {
 		testCase := testCase
 		t.Run(name, func(t *testing.T) {
+			t.Parallel()
 			filtered := FilterByPossibilities(testCase.value, testCase.possibilities)
 			assert.Equal(t, testCase.filtered, filtered)
 		})