feat(github-action)!: Update allenporter/flux-local action to 4.1.1 (#1096)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/flux-diff.yaml

@@ -19,7 +19,7 @@ jobs:
         resource: ["helmrelease", "kustomization"]
     steps:
       - name: Diff Resources
-        uses: allenporter/flux-local/action/diff@19bfc6920e8964a479363bc230e6c329120ead02 # 3.2.0
+        uses: allenporter/flux-local/action/diff@fbbc4c3d343af3ff57180a1067d7007fd4bd4d3c # 4.1.1
         id: diff
         with:
           sources: home-kubernetes