Update asyncpg requirement from <0.28.0,>=0.27.0 to >=0.27.0,<0.29.0 (#…

…233)

Updates the requirements on [asyncpg](https://github.com/MagicStack/asyncpg) to permit the latest version.
- [Release notes](https://github.com/MagicStack/asyncpg/releases)
- [Commits](MagicStack/asyncpg@v0.27.0...v0.28.0)

---
updated-dependencies:
- dependency-name: asyncpg
  dependency-type: direct:production
...

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

pyproject.toml

@@ -63,7 +63,7 @@ test = [
     "PyMySQL[rsa] >=1.0.2, <1.2.0",
     "psycopg2-binary >=2.9.5, <3.0.0",
     "aiosqlite >=0.17.0, <0.20.0",
-    "asyncpg >=0.27.0, <0.28.0",
+    "asyncpg >=0.27.0, <0.29.0",
     "aiomysql >=0.1.1, <0.3.0",
     "mongoengine >=0.25.0, <0.28.0",
     "odmantic >=0.9.0,<0.10.0",