gh/FormatCheck: update JuliaFormatter to v2

Author: Alexey Stukalov

.github/workflows/FormatCheck.yml

@@ -9,5 +9,5 @@ jobs:
     steps:
       - uses: julia-actions/julia-format@v4
         with:
-          version: '1'
+          version: '2'
           suggestion-label: 'format-suggest'