Bump the all-actions group across 1 directory with 2 updates (joe-elliott#228)

Bumps the all-actions group with 2 updates in the / directory: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [docker/metadata-action](https://github.com/docker/metadata-action).


Updates `actions/upload-artifact` from 5 to 6
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

Updates `docker/metadata-action` from 5.9.0 to 5.10.0
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@318604b...c299e40)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-actions
- dependency-name: docker/metadata-action
  dependency-version: 5.10.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-actions
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
           fi
 
       - name: Upload release artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: release-artifacts
           path: |

.github/workflows/release.yml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051
         with:
           images: joeelliott/cert-exporter