chore(deps): update aszc/change-string-case-action action to v7

Author: ubot-7274[bot]

.github/workflows/reusable-build.yml

@@ -168,7 +168,7 @@ jobs:
       # https://github.com/macbre/push-to-ghcr/issues/12
       - name: Lowercase Registry
         id: registry_case
-        uses: ASzc/change-string-case-action@d0603cd0a7dd490be678164909f65c7737470a7f # v6
+        uses: ASzc/change-string-case-action@624e17dfe730fc822c8171f67ccb134425b4b8ce # v7
         with:
           string: ${{ env.IMAGE_REGISTRY }}