chore(deps): update docker/metadata-action action to v6 (#5207)

Co-authored-by: homarr-renovate[bot] <158783068+homarr-renovate[bot]@users.noreply.github.com>

.github/workflows/deployment-docker-image.yml

@@ -123,7 +123,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: "${{ env.GHCR_REPO }}"
 
@@ -162,7 +162,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: "${{ env.GHCR_REPO }}"