Bump nest-asyncio from 1.5.6 to 1.5.7 in /requirements

Bumps [nest-asyncio](https://github.com/erdewit/nest_asyncio) from 1.5.6 to 1.5.7.
- [Commits](erdewit/nest_asyncio@v1.5.6...v1.5.7)

---
updated-dependencies:
- dependency-name: nest-asyncio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements/requirements_doc.txt

@@ -1,7 +1,7 @@
 Sphinx<8
 ansys-sphinx-theme==0.9.9
 imageio==2.31.1
-nest-asyncio==1.5.6
+nest-asyncio==1.5.7
 notfound==1.0.2
 pypandoc==1.11
 pyvista==0.41.0