Bump docker/metadata-action from 5 to 6

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 5 to 6.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/v5...v6)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build-onpremise.yml

@@ -124,7 +124,7 @@ jobs:
 
       - name: "Docker meta"
         id: "meta"
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.DOCKER_REPO }}
@@ -195,7 +195,7 @@ jobs:
 
       - name: "Docker meta"
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.DOCKER_REPO }}

.github/workflows/build-private.yml

@@ -168,7 +168,7 @@ jobs:
 
       - name: "Docker meta"
         id: "meta"
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: rg.fr-par.scw.cloud/solidtime/solidtime
           tags: |

.github/workflows/build-public.yml

@@ -109,7 +109,7 @@ jobs:
 
       - name: "Docker meta"
         id: "meta"
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.DOCKERHUB_REPO }}
@@ -193,7 +193,7 @@ jobs:
 
       - name: "Docker meta"
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.DOCKERHUB_REPO }}