Bump praw from 7.8.0 to 7.8.1

Bumps [praw](https://github.com/praw-dev/praw) from 7.8.0 to 7.8.1.
- [Release notes](https://github.com/praw-dev/praw/releases)
- [Changelog](https://github.com/praw-dev/praw/blob/master/CHANGES.rst)
- [Commits](praw-dev/praw@v7.8.0...v7.8.1)

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

Signed-off-by: dependabot[bot] <[email protected]>