Update asyncpg requirement from ~=0.24.0 to ~=0.27.0 in /api

Updates the requirements on [asyncpg](https://github.com/MagicStack/asyncpg) to permit the latest version.
- [Release notes](https://github.com/MagicStack/asyncpg/releases)
- [Commits](https://github.com/MagicStack/asyncpg/compare/v0.24.0...v0.27.0)

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

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

api/requirements.txt

@@ -9,6 +9,6 @@ pyyaml<6
 -e git+https://github.com/openmaptiles/openmaptiles-tools#egg=openmaptiles-tools
 sqlparse~=0.4.2
 sqlalchemy[asyncio]~=1.4.39
-asyncpg~=0.24.0
+asyncpg~=0.27.0
 pyshp~=2.3.1
 alembic~=1.7.7

api/setup.py

@@ -22,7 +22,7 @@ setup(
         "openmaptiles-tools",  # install from git
         "pyshp>=2.2,<2.4",
         "sqlalchemy[asyncio]~=1.4.25",
-        "asyncpg~=0.24.0",
+        "asyncpg>=0.24,<0.28",
         "alembic~=1.7.7",
     ],
     entry_points={