Update the documentation CI

- Use the latest stable version to build the docs
- Use the cache action, should make docs builds faster
- Dev all the sub-packages so we don't pull only the latest registered versions
  of `TimespanLogging` and `DaggerWebDash`.

Author: JamesWrigley

Diff for: .github/workflows/Documentation.yml

@@ -14,9 +14,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@latest
         with:
-          version: '1.8'
+          version: '1'
+      - uses: julia-actions/cache@v1
       - name: Install dependencies
-        run: julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
+        run: julia --project=docs/ -e 'using Pkg; Pkg.develop([PackageSpec(path=pwd()), PackageSpec(path=pwd() * "/lib/TimespanLogging"), PackageSpec(path=pwd() * "/lib/DaggerWebDash")]); Pkg.instantiate()'
       - name: Build and deploy
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # For authentication with GitHub Actions token