build(deps): bump modules/mkdocs-material from 5ec4513 to c68238a

Bumps [modules/mkdocs-material](https://github.com/privacyguides/mkdocs-material-insiders) from `5ec4513` to `c68238a`.
- [Release notes](https://github.com/privacyguides/mkdocs-material-insiders/releases)
- [Commits](privacyguides/mkdocs-material-insiders@5ec4513...c68238a)

---
updated-dependencies:
- dependency-name: modules/mkdocs-material
  dependency-type: direct:production
...

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