Bump actions/upload-pages-artifact from 2 to 3 (#23)

Bumps [actions/upload-pages-artifact](https://github.com/actions/upload-pages-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-pages-artifact/releases)
- [Commits](actions/upload-pages-artifact@v2...v3)

---
updated-dependencies:
- dependency-name: actions/upload-pages-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docs.yml

@@ -38,7 +38,7 @@ jobs:
           cp -r docs/bookCompiled/* _site
         
       - name: Upload  _site directory for deploy job
-        uses: actions/upload-pages-artifact@v2 # This will automatically upload an artifact from the '/_site' directory
+        uses: actions/upload-pages-artifact@v3 # This will automatically upload an artifact from the '/_site' directory
 
 
   # Deploy _site directory with permissions of GITHUB_TOKEN