Bump rector/rector from 0.12.19 to 0.12.20
Bump rector/rector from 0.12.19 to 0.12.20

Bumps [rector/rector](https://github.com/rectorphp/rector) from 0.12.19 to 0.12.20.
- [Release notes](https://github.com/rectorphp/rector/releases)
- [Commits](https://github.com/rectorphp/rector/compare/0.12.19...0.12.20)

---
updated-dependencies:
- dependency-name: rector/rector
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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