Bump attrs from 25.4.0 to 26.1.0 in /jwtproxy

Bumps [attrs](https://github.com/python-attrs/attrs) from 25.4.0 to 26.1.0.
- [Release notes](https://github.com/python-attrs/attrs/releases)
- [Changelog](https://github.com/python-attrs/attrs/blob/main/CHANGELOG.md)
- [Commits](python-attrs/attrs@25.4.0...26.1.0)

---
updated-dependencies:
- dependency-name: attrs
  dependency-version: 26.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

jwtproxy/requirements.txt

@@ -1,7 +1,7 @@
 aiohttp==3.13.4
 aiosignal==1.4.0
 async-timeout==4.0.2
-attrs==25.4.0
+attrs==26.1.0
 azure-monitor-opentelemetry==1.8.7
 cffi>=2.0.0
 charset-normalizer==3.4.6