Bump feedparser from 6.0.8 to 6.0.11

Bumps [feedparser](https://github.com/kurtmckee/feedparser) from 6.0.8 to 6.0.11.
- [Changelog](https://github.com/kurtmckee/feedparser/blob/develop/CHANGELOG.rst)
- [Commits](kurtmckee/feedparser@6.0.8...6.0.11)

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

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

base-requirements.txt

@@ -15,7 +15,7 @@ python-decouple==3.4
 # lxml used by BeautifulSoup.
 lxml==5.2.2
 cssselect==1.1.0
-feedparser==6.0.8
+feedparser==6.0.11
 beautifulsoup4==4.11.2
 icalendar==4.0.7
 chardet==4.0.0