update actions versions for code coverage and docs deploy steps re: NatLabRockies#473 (these actions were overlooked in previous commits which had skipped the codecov/pages actions by virtue of being on feature branches/PRs; see https://github.com/softwareengineerprogrammer/GEOPHIRES/actions/runs/23657788521 for example build with warnings)

Author: softwareengineerprogrammer

.github/workflows/github-actions.yml

@@ -154,7 +154,7 @@ jobs:
           tox -e py311
 
       - name: Codecov GitHub Action
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           # Token configuration: https://github.com/softwareengineerprogrammer/GEOPHIRES/settings/secrets/actions
@@ -201,8 +201,8 @@ jobs:
         done
 
     - name: upload artifact
-      uses: actions/upload-pages-artifact@v3
+      uses: actions/upload-pages-artifact@v4
 
     - name: deploy to GitHub Pages
       id: deployment
-      uses: actions/deploy-pages@v4
+      uses: actions/deploy-pages@v5