Add zizmor checks on CI. (#5161)

* Add zizmor checks on CI.

* Fix zizmor credentials warnings

* Add persist-credentials: false to action-cached-lfs-checkout too.

* Add empty permissions by default.

* Ignore pull_request_target failure and add a warning.

.github/workflows/integration-tests.yml

@@ -6,6 +6,8 @@ on:
     
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   integration_tests:
     name: Integration Tests
@@ -18,7 +20,9 @@ jobs:
       cancel-in-progress: false
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Setup environment
         run:
@@ -32,7 +36,7 @@ jobs:
           INTEGRATION_TESTS_PASSWORD: ${{ secrets.INTEGRATION_TESTS_PASSWORD }}
 
       - name: Archive artifacts
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         # We only care about artefacts if the tests fail
         if: failure()
         with: