Bump asyncpg from 0.20.1 to 0.21.0 in /frameworks/Python/starlette (#6544)
Bumps [asyncpg](https://github.com/MagicStack/asyncpg) from 0.20.1 to 0.21.0.
- [Release notes](https://github.com/MagicStack/asyncpg/releases)
- [Commits](https://github.com/MagicStack/asyncpg/compare/v0.20.1...v0.21.0)
Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
dependabot[bot]