Update GitHub shiny and htmltools versions in CI

Bump shiny to v1.4.0 and htmltools to v0.6.0 in the deploy-tests workflow for GitHub installs. This ensures tests run against the latest versions from the respective repositories.

Author: karangattu

.github/workflows/deploy-tests.yaml

@@ -84,11 +84,11 @@ jobs:
           uv pip uninstall shiny htmltools
           uv pip install shiny htmltools
 
-      - name: Install GitHub shiny@v1.0.0 and htmltools@v0.5.3 (uninstall PyPI versions)
+      - name: Install GitHub shiny@v1.4.0 and htmltools@v0.6.0 (uninstall PyPI versions)
         if: ${{ matrix.config.github_shiny }}
         run: |
           uv pip uninstall shiny htmltools
-          uv pip install "htmltools @ git+https://github.com/posit-dev/py-htmltools.git@v0.5.3" "shiny @ git+https://github.com/posit-dev/py-shiny.git@v1.0.0"
+          uv pip install "htmltools @ git+https://github.com/posit-dev/py-htmltools.git@v0.6.0" "shiny @ git+https://github.com/posit-dev/py-shiny.git@v1.4.0"
 
       - name: Install rsconnect (PyPI)
         if: ${{ matrix.config.pypi_rsconnect }}