Bump alembic from 1.0.1 to 1.0.2 (#4987)
Bump alembic from 1.0.1 to 1.0.2 (#4987)

Bumps [alembic](https://bitbucket.org/zzzeek/alembic) from 1.0.1 to 1.0.2.
- [Changelog](https://bitbucket.org/zzzeek/alembic/src/master/CHANGES)
- [Commits](https://bitbucket.org/zzzeek/alembic/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
pypa/warehouse,dstufft/warehouse,pypa/warehouse,dstufft/warehouse,dstufft/warehouse,pypa/warehouse,pypa/warehouse,dstufft/warehouse