deps(deps): update sphinx-copybutton requirement from >=0.5.0 to >=0.5.2

Updates the requirements on [sphinx-copybutton](https://github.com/executablebooks/sphinx-copybutton) to permit the latest version.
- [Release notes](https://github.com/executablebooks/sphinx-copybutton/releases)
- [Changelog](https://github.com/executablebooks/sphinx-copybutton/blob/master/CHANGELOG.md)
- [Commits](https://github.com/executablebooks/sphinx-copybutton/compare/v0.5.0...v0.5.2)

---
updated-dependencies:
- dependency-name: sphinx-copybutton
  dependency-version: 0.5.2
  dependency-type: direct:production
...

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

docs/requirements.txt

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