Bump rich from 13.7.1 to 13.8.0 in /.github/requirements (pyca#11496)

Bumps [rich](https://github.com/Textualize/rich) from 13.7.1 to 13.8.0.
- [Release notes](https://github.com/Textualize/rich/releases)
- [Changelog](https://github.com/Textualize/rich/blob/master/CHANGELOG.md)
- [Commits](Textualize/rich@v13.7.1...v13.8.0)

---
updated-dependencies:
- dependency-name: rich
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/requirements/publish-requirements.txt

@@ -303,9 +303,9 @@ rfc3986==2.0.0 \
     --hash=sha256:50b1502b60e289cb37883f3dfd34532b8873c7de9f49bb546641ce9cbd256ebd \
     --hash=sha256:97aacf9dbd4bfd829baad6e6309fa6573aaf1be3f6fa735c8ab05e46cecb261c
     # via twine
-rich==13.7.1 \
-    --hash=sha256:4edbae314f59eb482f54e9e30bf00d33350aaa94f4bfcd4e9e3110e64d0d7222 \
-    --hash=sha256:9be308cb1fe2f1f57d67ce99e95af38a1e2bc71ad9813b0e247cf7ffbcc3a432
+rich==13.8.0 \
+    --hash=sha256:2e85306a063b9492dffc86278197a60cbece75bcb766022f3436f567cae11bdc \
+    --hash=sha256:a5ac1f1cd448ade0d59cc3356f7db7a7ccda2c8cbae9c7a90c28ff463d3e91f4
     # via twine
 secretstorage==3.3.3 \
     --hash=sha256:2403533ef369eca6d2ba81718576c5e0f564d5cca1b58f73a8b23e7d4eeebd77 \