build(deps): 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](https://github.com/lkiesow/python-feedgen/compare/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

@@ -28,7 +28,7 @@ dnspython==2.4.2
 domain2idna==1.12.0
 ecdsa==0.18.0
 extras==1.0.0
-feedgen==0.9.0
+feedgen==1.0.0
 feedparser==6.0.11
 fixtures==4.1.0
 Flask==3.0.0