chore(deps): update docker/metadata-action digest to c299e40 (#1887)

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

.github/workflows/pr-docker.yml

@@ -39,7 +39,7 @@ jobs:
           version: latest
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
         with:
           images: ghcr.io/go-vikunja/vikunja
           tags: |

.github/workflows/release.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Docker meta version
         if: ${{ github.ref_type == 'tag' }}
         id: meta
-        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
         with:
           images: |
             vikunja/vikunja