Update Documenter

Author: xrq-phys

.github/workflows/Documenter.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@latest
         with:
-          version: '1.5'
+          version: '1.7'
       - run: |
           julia --project=docs -e '
             using Pkg