Bump julia-actions/setup-julia from 1 to 2 (#578)

Bumps [julia-actions/setup-julia](https://github.com/julia-actions/setup-julia) from 1 to 2.
- [Release notes](https://github.com/julia-actions/setup-julia/releases)
- [Commits](julia-actions/setup-julia@v1...v2)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.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@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ steps.julia_compat.outputs.version }}
       - name: Install CompatHelper

.github/workflows/ci.yml

@@ -64,7 +64,7 @@ jobs:
       - uses: actions/checkout@v4
 
       # install Julia
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}