Update ASzc/change-string-case-action action to v8

Author: renovate[bot]

.github/workflows/main.yml

@@ -78,7 +78,7 @@ jobs:
 
       - name: Create image name
         id: github-image
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v8
         with:
           string: ${{ env.REGISTRY }}/${{ env.GITHUB_IMAGE_NAME }}