Update README.md

[KirillZi]

One more database migration tool for your list. No heavy dependencies like JVM. Currently focused on PostgreSQL. We've released this year. So, if it is suitable I'll happy to have any mention on the net. Samples: https://github.com/DBinvent/rdbm

Description

Performance impact

Security impact

Checklist

• [ ] My code matches the project's code style and yarn lint:fix passes.
• [ ] I've added tests for the new feature, and yarn test passes.
• [ ] I have detailed the new feature in the relevant documentation.
• [ ] I have added this feature to 'Pending' in the RELEASE_NOTES.md file (if one exists).
• [ ] If this is a breaking change I've explained why.