Bump asyncpg from 0.25.0 to 0.27.0

Bumps [asyncpg](https://github.com/MagicStack/asyncpg) from 0.25.0 to 0.27.0.
- [Release notes](https://github.com/MagicStack/asyncpg/releases)
- [Commits](MagicStack/asyncpg@v0.25.0...v0.27.0)

---
updated-dependencies:
- dependency-name: asyncpg
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 aiohttp==3.8.1
-asyncpg==0.25.0
+asyncpg==0.27.0
 black==22.3.0
 discord.py @ git+https://github.com/Rapptz/discord.py@d6004363784478538f8c2e3049ca59306f7da9a4
 isort==5.10.1