build(deps): bump phpgt/servicecontainer from 1.2.0 to 1.2.1 (#575)

Bumps [phpgt/servicecontainer](https://github.com/PhpGt/ServiceContainer) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/PhpGt/ServiceContainer/releases)
- [Commits](phpgt/ServiceContainer@v1.2.0...v1.2.1)

---
updated-dependencies:
- dependency-name: phpgt/servicecontainer
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]