Bump ftmq from 0.6.5 to 0.6.8

Bumps [ftmq](https://github.com/investigativedata/ftmq) from 0.6.5 to 0.6.8.
- [Release notes](https://github.com/investigativedata/ftmq/releases)
- [Changelog](https://github.com/investigativedata/ftmq/blob/main/CHANGELOG.md)
- [Commits](investigativedata/ftmq@v0.6.5...v0.6.8)

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

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