Bump poetry from 1.2.0 to 1.2.1 in /.github/workflows (#593)

Bumps [poetry](https://github.com/python-poetry/poetry) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/master/CHANGELOG.md)
- [Commits](python-poetry/poetry@1.2.0...1.2.1)

---
updated-dependencies:
- dependency-name: poetry
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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.github/workflows/requirements.txt

@@ -1,2 +1,2 @@
 pip==22.2.2
-poetry==1.2.0
+poetry==1.2.1