Bump alembic from 1.12.0 to 1.12.1 (#255)

Bumps [alembic](https://github.com/sqlalchemy/alembic) from 1.12.0 to 1.12.1.
- [Release notes](https://github.com/sqlalchemy/alembic/releases)
- [Changelog](https://github.com/sqlalchemy/alembic/blob/main/CHANGES)
- [Commits](https://github.com/sqlalchemy/alembic/commits)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,4 +1,4 @@
-alembic==1.12.0
+alembic==1.12.1
 azure-common==1.1.28
 azure-nspkg==3.0.2
 azure-storage-blob==12.18.3