chore(deps): update docker/metadata-action action to v5.9.0

Author: renovate[bot]

.github/workflows/build-multiarch.yml

@@ -33,7 +33,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
+        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5.9.0
         with:
           images: |
             ghcr.io/jeboehm/fetchmailmgr