Require Julia v1.7 (#1150)

* Require Julia v1.7

* Test on Julia v1.7

* [AutoBuild] Improve `get_next_wrapper_version`

* Bump version to v0.5.0

* [CI] Update registry before building documentation

Author: giordano

.github/workflows/documentation.yml

@@ -17,14 +17,15 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@latest
         with:
-          version: "1.6"
+          version: "1.7"
       - uses: julia-actions/cache@v1
         with:
           cache-registries: "true"
       - name: Install dependencies
         shell: julia --color=yes --project=docs/ {0}
         run: |
           using Pkg
+          Pkg.Registry.update()
           Pkg.develop(PackageSpec(path=pwd()))
           Pkg.instantiate()
       - uses: julia-actions/julia-docdeploy@releases/v1