ci: bump docker/metadata-action from 5.8.0 to 5.9.0

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 5.8.0 to 5.9.0.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/c1e51972afc2121e065aed6d45c65596fe445f3f...318604b99e75e41977312d83839a89be02ca4893)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-version: 5.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build-xemu-win64-toolchain.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v4
       - name: Extract image metadata (tags, labels)
         id: meta
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5
+        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           labels: |