Update format_check

Author: blegat

.github/workflows/format_check.yml

@@ -14,12 +14,12 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Format check
         shell: julia --color=yes {0}
         run: |
           using Pkg
-          Pkg.add(PackageSpec(name="JuliaFormatter", version="1"))
+          Pkg.add(PackageSpec(name="JuliaFormatter", version="2"))
           using JuliaFormatter
           format("src", verbose=true)
           format("test", verbose=true)