Bump axios from 1.6.8 to 1.7.7 in /admin/discourse-sidebar (#530)

Bumps [axios](https://github.com/axios/axios) from 1.6.8 to 1.7.7.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](axios/axios@v1.6.8...v1.7.7)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
...

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