Bump mout from 1.2.3 to 1.2.4 in /webapp (#2973)

Bumps [mout](https://github.com/mout/mout) from 1.2.3 to 1.2.4.
- [Release notes](https://github.com/mout/mout/releases)
- [Changelog](https://github.com/mout/mout/blob/master/CHANGELOG.md)
- [Commits](mout/mout@v1.2.3...v1.2.4)

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

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

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

Author: dependabot[bot]