Bump gallery-dl from 1.29.6 to 1.29.7 in /src

Bumps [gallery-dl](https://github.com/mikf/gallery-dl) from 1.29.6 to 1.29.7.
- [Release notes](https://github.com/mikf/gallery-dl/releases)
- [Changelog](https://github.com/mikf/gallery-dl/blob/master/CHANGELOG.md)
- [Commits](mikf/gallery-dl@v1.29.6...v1.29.7)

---
updated-dependencies:
- dependency-name: gallery-dl
  dependency-version: 1.29.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -1,5 +1,5 @@
 python-telegram-bot[ext]==22.0
 python-dotenv==1.1.0
 yt-dlp==2025.4.30
-gallery-dl==1.29.6
+gallery-dl==1.29.7
 aiohttp==3.11.18