Bump julia-actions/julia-format from 3 to 4

Bumps [julia-actions/julia-format](https://github.com/julia-actions/julia-format) from 3 to 4.
- [Release notes](https://github.com/julia-actions/julia-format/releases)
- [Commits](julia-actions/julia-format@v3...v4)

---
updated-dependencies:
- dependency-name: julia-actions/julia-format
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/JuliaFormatter.yml

@@ -10,7 +10,7 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: julia-actions/julia-format@v3
+      - uses: julia-actions/julia-format@v4
         with:
           version: '1' # Set `version` to '1.0.54' if you need to use JuliaFormatter.jl v1.0.54 (default: '1')
           suggestion-label: 'format-suggest' # leave this unset or empty to show suggestions for all PRs