ci(github-action): update action fluxcd/flux2 ( v2.6.2 → v2.6.3 )

| datasource  | package      | from   | to     |
| ----------- | ------------ | ------ | ------ |
| github-tags | fluxcd/flux2 | v2.6.2 | v2.6.3 |

Author: renovate[bot]

.github/workflows/flux-diff.yml

@@ -21,7 +21,7 @@ jobs:
           - kustomization
     steps:
       - name: Setup Flux CLI
-        uses: fluxcd/flux2/action@v2.6.2
+        uses: fluxcd/flux2/action@v2.6.3
       - name: Diff Resources
         uses: allenporter/flux-local/action/diff@7.5.6
         id: diff