Use Julia v1.11 to create docs (#42)

* Use Julia v1.10 to create docs

* Use Julia v1.11

Author: ranocha

.github/workflows/Documentation.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
-          version: "1"
+          version: "1.11"
       - uses: julia-actions/cache@v2
       - name: instantiate docs
         run: |