Update format-check.yml

Author: t-bltg

.github/workflows/format-check.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install JuliaFormatter and format
         run: |
           julia -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter"))'