Bump libmozdata from 0.2.8 to 0.2.9 (#2521)

Bumps [libmozdata](https://github.com/mozilla/libmozdata) from 0.2.8 to 0.2.9.
- [Release notes](https://github.com/mozilla/libmozdata/releases)
- [Commits](mozilla/libmozdata@v0.2.8...v0.2.9)

---
updated-dependencies:
- dependency-name: libmozdata
  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>

Author: dependabot[bot]

requirements.txt

@@ -6,7 +6,7 @@ gspread==6.1.4
 humanize>=0.5.1
 icalendar==6.0.1
 Jinja2==3.1.4
-libmozdata==0.2.8
+libmozdata==0.2.9
 numpy==2.1.3
 pep8==1.7.1
 pyflakes==3.2.0