Bump exceptiongroup from 1.3.0 to 1.3.1 (#3128)

Bumps [exceptiongroup](https://github.com/agronholm/exceptiongroup) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/agronholm/exceptiongroup/releases)
- [Changelog](https://github.com/agronholm/exceptiongroup/blob/main/CHANGES.rst)
- [Commits](https://github.com/agronholm/exceptiongroup/compare/1.3.0...1.3.1)

---
updated-dependencies:
- dependency-name: exceptiongroup
  dependency-version: 1.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -13,7 +13,7 @@ ago = "~=0.1.0"
 beautifulsoup4 = "^4.14.2"
 blinker = "~=1.8"
 gevent = "==25.9.1"
-exceptiongroup = "==1.3.0"
+exceptiongroup = "==1.3.1"
 flask = "~=3.1"
 flask-basicauth = "~=0.2"
 flask-login = "^0.6"