Bump julia-actions/setup-julia from 2 to 3 (#145)

* 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>

* Apply suggestion from @blegat

---------

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -13,15 +13,15 @@ jobs:
       matrix:
         version: ['1'] # , '1.6']  # LTS is failing because HomotopyContinuation is a dependency of the tests it doesn't support the LTS
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        arch: [x64]
+        arch: [default] # x64 for Ubuntu and Windows and aarch64for Mac OS
         include:
           # Also test against 32-bit Linux
           - version: '1'
             os: ubuntu-latest
             arch: x86
     steps:
       - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}