Bump apache-beam from 2.11.0 to 2.12.0 (#93)

Bumps [apache-beam](https://github.com/apache/beam) from 2.11.0 to 2.12.0.
- [Release notes](https://github.com/apache/beam/releases)
- [Commits](https://github.com/apache/beam/compare/v2.11.0...v2.12.0

)

Signed-off-by: dependabot[bot] <support@dependabot.com>