Bump shell-quote and @react-native-community/cli-tools in /TestingApp

Bumps [shell-quote](https://github.com/ljharb/shell-quote) and [@react-native-community/cli-tools](https://github.com/react-native-community/cli/tree/HEAD/packages/tools). These dependencies needed to be updated together.

Updates `shell-quote` from 1.6.1 to 1.8.0
- [Release notes](https://github.com/ljharb/shell-quote/releases)
- [Changelog](https://github.com/ljharb/shell-quote/blob/main/CHANGELOG.md)
- [Commits](ljharb/shell-quote@1.6.1...v1.8.0)

Updates `@react-native-community/cli-tools` from 6.1.0 to 6.2.1
- [Release notes](https://github.com/react-native-community/cli/releases)
- [Commits](https://github.com/react-native-community/cli/commits/@react-native-community/[email protected]/packages/tools)

---
updated-dependencies:
- dependency-name: shell-quote
  dependency-type: indirect
- dependency-name: "@react-native-community/cli-tools"
  dependency-type: indirect
...

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