Enable testifylint rules (#34075)

enable testifylint rules disabled in:
https://github.com/go-gitea/gitea/pull/34054

services/webhook/deliver_test.go

@@ -138,7 +138,7 @@ func TestWebhookDeliverHookTask(t *testing.T) {
 		case "/webhook/66d222a5d6349e1311f551e50722d837e30fce98":
 			// Version 1
 			assert.Equal(t, "push", r.Header.Get("X-GitHub-Event"))
-			assert.Equal(t, "", r.Header.Get("Content-Type"))
+			assert.Empty(t, r.Header.Get("Content-Type"))
 			body, err := io.ReadAll(r.Body)
 			assert.NoError(t, err)
 			assert.Equal(t, `{"data": 42}`, string(body))

services/webhook/msteams_test.go

@@ -335,7 +335,7 @@ func TestMSTeamsPayload(t *testing.T) {
 		assert.Equal(t, "[test/repo] New wiki page 'index' (Wiki change comment)", pl.Summary)
 		assert.Len(t, pl.Sections, 1)
 		assert.Equal(t, "user1", pl.Sections[0].ActivitySubtitle)
-		assert.Equal(t, "", pl.Sections[0].Text)
+		assert.Empty(t, pl.Sections[0].Text)
 		assert.Len(t, pl.Sections[0].Facts, 2)
 		for _, fact := range pl.Sections[0].Facts {
 			if fact.Name == "Repository:" {
@@ -356,7 +356,7 @@ func TestMSTeamsPayload(t *testing.T) {
 		assert.Equal(t, "[test/repo] Wiki page 'index' edited (Wiki change comment)", pl.Summary)
 		assert.Len(t, pl.Sections, 1)
 		assert.Equal(t, "user1", pl.Sections[0].ActivitySubtitle)
-		assert.Equal(t, "", pl.Sections[0].Text)
+		assert.Empty(t, pl.Sections[0].Text)
 		assert.Len(t, pl.Sections[0].Facts, 2)
 		for _, fact := range pl.Sections[0].Facts {
 			if fact.Name == "Repository:" {

services/webhook/packagist_test.go

@@ -210,5 +210,5 @@ func TestPackagistEmptyPayload(t *testing.T) {
 	var body PackagistPayload
 	err = json.NewDecoder(req.Body).Decode(&body)
 	assert.NoError(t, err)
-	assert.Equal(t, "", body.PackagistRepository.URL)
+	assert.Empty(t, body.PackagistRepository.URL)
 }