chore(deps): bump docker/metadata-action from 5 to 6 (#29519)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/nightly.yml

@@ -76,7 +76,7 @@ jobs:
 
       - name: Define tags
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: evcc/evcc
           tags: |

.github/workflows/release.yml

@@ -41,7 +41,7 @@ jobs:
 
       - name: Meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             evcc/evcc