Bump pip from 21.1.2 to 21.2.1 (#1135)
Bump pip from 21.1.2 to 21.2.1 (#1135)

Bumps [pip](https://github.com/pypa/pip) from 21.1.2 to 21.2.1.
- [Release notes](https://github.com/pypa/pip/releases)
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](https://github.com/pypa/pip/compare/21.1.2...21.2.1)

---
updated-dependencies:
- dependency-name: pip
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
c2corg/v6_api,c2corg/v6_api,c2corg/v6_api