Bump feedgen from 0.9.0 to 1.0.0

Bumps [feedgen](https://github.com/lkiesow/python-feedgen) from 0.9.0 to 1.0.0.
- [Release notes](https://github.com/lkiesow/python-feedgen/releases)
- [Commits](lkiesow/python-feedgen@v0.9.0...v1.0.0)

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

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

requirements.txt

@@ -3,7 +3,7 @@ Flask==3.0.0
 Pygments==2.17.2
 Werkzeug==3.0.1
 bleach==6.1.0
-feedgen==0.9.0
+feedgen==1.0.0
 gunicorn==21.2.0
 httpx==0.26.0
 jsonpatch==1.33