Bump nest-asyncio from 1.5.7 to 1.5.8 in /.devcontainer (#291)

Bumps [nest-asyncio](/~https://github.com/erdewit/nest_asyncio) from 1.5.7 to 1.5.8.
- [Commits](erdewit/nest_asyncio@v1.5.7...v1.5.8)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.devcontainer/requirements.txt

@@ -14,5 +14,5 @@
 
 black==23.9.1
 isort==5.12.0
-nest-asyncio==1.5.7
+nest-asyncio==1.5.8
 tensorflow-federated==0.60.0