Add vulnerability scanning for wekan-selenium repo using Trivy

.github/workflows/e2e-testing.yml

@@ -229,6 +229,15 @@ jobs:
             repository: omriza5/wekan-selenium
             token: ${{ secrets.UI_TESTING_GITHUB_TOKEN }}
 
+        - name: Scan wekan-selenium repo for vulnerabilities
+          uses: aquasecurity/trivy-action@master
+          with:
+              scan-type: 'fs'
+              format: 'table'
+              severity: 'HIGH,CRITICAL'
+              ignore-unfixed: true
+              exit-code: 0
+
         - name: Set up Python 3.11
           uses: actions/setup-python@v4
           with: