ci(deps): bump actions/deploy-pages from 4 to 5

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 4 to 5.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](https://github.com/actions/deploy-pages/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/deploy-pages
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docs.yml

@@ -80,4 +80,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5

docs/requirements.txt

@@ -7,7 +7,7 @@ myst-parser>=0.18.0
 sphinx-autodoc-typehints>=1.19.0
 
 # Additional Sphinx extensions
-sphinx-copybutton>=0.5.2
+sphinx-copybutton>=0.5.0
 sphinx-tabs>=3.4.0
 
 # For parsing project dependencies