chore(deps): bump aws-mfa from 1.0.20 to 1.0.21 in the aws group

Bumps the aws group with 1 update: [aws-mfa](https://github.com/jhandguy/aws-mfa).


Updates `aws-mfa` from 1.0.20 to 1.0.21
- [Release notes](https://github.com/jhandguy/aws-mfa/releases)
- [Commits](jhandguy/aws-mfa@v1.0.20...v1.0.21)

---
updated-dependencies:
- dependency-name: aws-mfa
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: aws
...

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