Bump sphinx-copybutton from 0.3.1 to 0.5.2 in /package

Bumps [sphinx-copybutton](https://github.com/executablebooks/sphinx-copybutton) from 0.3.1 to 0.5.2.
- [Release notes](https://github.com/executablebooks/sphinx-copybutton/releases)
- [Changelog](https://github.com/executablebooks/sphinx-copybutton/blob/master/CHANGELOG.md)
- [Commits](executablebooks/sphinx-copybutton@v0.3.1...v0.5.2)

---
updated-dependencies:
- dependency-name: sphinx-copybutton
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package/setup.py

@@ -53,7 +53,7 @@
     extras_require={
         "docs": [
             "sphinx~=5.3.0",
-            "sphinx_copybutton==0.3.1",
+            "sphinx_copybutton==0.5.2",
             "sphinx-notfound-page",
             "sphinx_rtd_theme==1.2.0",
             "myst-parser~=1.0.0",