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

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

---
updated-dependencies:
- dependency-name: julia-actions/setup-julia
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/CompatHelper.yml

@@ -16,7 +16,7 @@ jobs:
         run : |
           version=$(grep '^julia = ' Project.toml | grep -o '".*"' | cut -d '"' -f2)
           echo "::set-output name=version::$version"
-      - uses: julia-actions/setup-julia@v2
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ steps.julia_compat.outputs.version }}
       - name: Install CompatHelper

.github/workflows/Format.yml

@@ -28,7 +28,7 @@ jobs:
           git fetch upstream
 
       - name: Setup Julia
-        uses: julia-actions/setup-julia@v2
+        uses: julia-actions/setup-julia@v3
         with:
           version: '1'
           arch: 'x64'