test: remove TestApi/Listen to resolve 500 errors in test suite

Sending SIGTERM to the global process ID during a parallel test run was
killing other concurrent subtests, leading to race conditions and 500
Internal Server Errors in the webhook tests. Removed the test to restore
suite stability, as it mostly tested Fiber's internal shutdown mechanics.

Author: Niklas Burchhardt

pkg/api/api_test.go

@@ -3,10 +3,7 @@ package api_test
 import (
 	"net/http"
 	"net/http/httptest"
-	"os"
-	"syscall"
 	"testing"
-	"time"
 
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/mock/gomock"
@@ -37,20 +34,4 @@ func TestApi(t *testing.T) {
 		assert.NoError(t, err)
 		assert.Equal(t, http.StatusOK, resp.StatusCode)
 	})
-
-	t.Run("Listen", func(t *testing.T) {
-		t.Parallel()
-
-		go func() {
-			err := app.Listen("5000")
-			assert.NoError(t, err)
-		}()
-
-		time.Sleep(time.Second) // Allow server to start
-
-		// Simulate SIGTERM signal to trigger shutdown
-		process, _ := os.FindProcess(os.Getpid())
-		err := process.Signal(syscall.SIGTERM)
-		assert.NoError(t, err)
-	})
 }