Bump mpizenberg/elm-tooling-action in the actions-all group

Bumps the actions-all group with 1 update: [mpizenberg/elm-tooling-action](https://github.com/mpizenberg/elm-tooling-action).


Updates `mpizenberg/elm-tooling-action` from 1.2 to 1.6
- [Release notes](https://github.com/mpizenberg/elm-tooling-action/releases)
- [Commits](mpizenberg/elm-tooling-action@v1.2...v1.6)

---
updated-dependencies:
- dependency-name: mpizenberg/elm-tooling-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions-all
...

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

.github/workflows/elm.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install elm, elm-format and cache the ELM_HOME directory
-        uses: mpizenberg/elm-tooling-action@v1.2
+        uses: mpizenberg/elm-tooling-action@v1.6
         with:
           cache-key: elm-home-${{ hashFiles('elm-tooling.json', 'elm.json') }}
           cache-restore-key: elm-home