Bump julia-actions/julia-format from 2 to 3

Bumps [julia-actions/julia-format](https://github.com/julia-actions/julia-format) from 2 to 3.
- [Release notes](https://github.com/julia-actions/julia-format/releases)
- [Commits](julia-actions/julia-format@v2...v3)

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

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

.github/workflows/FormatCheck.yml

@@ -6,4 +6,4 @@ jobs:
  code-style:
  runs-on: ubuntu-latest
  steps:
- - uses: julia-actions/julia-format@v2
+ - uses: julia-actions/julia-format@v3