Bump libmozdata from 0.2.7 to 0.2.8 (#2493)

Bumps [libmozdata](https://github.com/mozilla/libmozdata) from 0.2.7 to 0.2.8.
- [Release notes](https://github.com/mozilla/libmozdata/releases)
- [Commits](mozilla/libmozdata@v0.2.7...v0.2.8)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -5,7 +5,7 @@ gspread==6.1.3
 humanize>=0.5.1
 icalendar==5.0.13
 Jinja2==3.1.4
-libmozdata==0.2.7
+libmozdata==0.2.8
 numpy==2.1.1
 pep8==1.7.1
 pyflakes==3.2.0