Bump the small-apps group across 1 directory with 2 updates

Bumps the small-apps group with 2 updates in the / directory: [installer/nxt-tools](https://github.com/trikset/nxt-tools) and [thirdparty/checkapp/checkapp](https://github.com/trikset/trik-checkapp).


Updates `installer/nxt-tools` from `dff80a0` to `6c4d5f1`
- [Commits](trikset/nxt-tools@dff80a0...6c4d5f1)

Updates `thirdparty/checkapp/checkapp` from `dc4922b` to `f735508`
- [Commits](trikset/trik-checkapp@dc4922b...f735508)

---
updated-dependencies:
- dependency-name: installer/nxt-tools
  dependency-type: direct:production
  dependency-group: small-apps
- dependency-name: thirdparty/checkapp/checkapp
  dependency-type: direct:production
  dependency-group: small-apps
...

Signed-off-by: dependabot[bot] <support@github.com>