Bump ASzc/change-string-case-action from 5 to 6

Bumps [ASzc/change-string-case-action](https://github.com/aszc/change-string-case-action) from 5 to 6.
- [Release notes](https://github.com/aszc/change-string-case-action/releases)
- [Commits](ASzc/change-string-case-action@v5...v6)

---
updated-dependencies:
- dependency-name: ASzc/change-string-case-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/official.yml

@@ -40,13 +40,13 @@ jobs:
 
       - name: Lower case dockerhub image name
         id: dockerhub_image
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}
 
       - name: Lower case github docker image name
         id: ghcr_image
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ github.repository }}
 

.github/workflows/unofficial.yml

@@ -40,13 +40,13 @@ jobs:
 
       - name: Lower case dockerhub image name
         id: dockerhub_image
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}
 
       - name: Lower case github docker image name
         id: ghcr_image
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ github.repository }}