Bump minimatch and mocha in /lib/e2e/offline-signing

Bumps [minimatch](https://github.com/isaacs/minimatch) to 3.1.2 and updates ancestor dependency [mocha](https://github.com/mochajs/mocha). These dependencies need to be updated together.


Updates `minimatch` from 3.0.4 to 3.1.2
- [Release notes](https://github.com/isaacs/minimatch/releases)
- [Commits](isaacs/minimatch@v3.0.4...v3.1.2)

Updates `mocha` from 9.0.3 to 9.2.2
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v9.0.3...v9.2.2)

---
updated-dependencies:
- dependency-name: minimatch
  dependency-type: indirect
- dependency-name: mocha
  dependency-type: direct:production
...

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