fix: Pin aiosqlite version to 0.21.0

Co-authored-by: Xuan Yang <xygoogle@google.com>
PiperOrigin-RevId: 846056994

Author: xuanyang15

pyproject.toml

@@ -26,7 +26,8 @@ classifiers = [ # List of https://pypi.org/classifiers/
 dependencies = [
   # go/keep-sorted start
   "PyYAML>=6.0.2, <7.0.0",                                   # For APIHubToolset.
-  "aiosqlite>=0.21.0",                                       # For SQLite database
+  # TODO: Update aiosqlite version once https://github.com/omnilib/aiosqlite/issues/369 is fixed.
+  "aiosqlite==0.21.0",                                       # For SQLite database
   "anyio>=4.9.0, <5.0.0",                                    # For MCP Session Manager
   "authlib>=1.5.1, <2.0.0",                                  # For RestAPI Tool
   "click>=8.1.8, <9.0.0",                                    # For CLI tools