⬆️ Upgrade AnyIO max version for tests, new range: >=3.2.1,<5.0.0 (#13273)

.github/workflows/test.yml

@@ -81,6 +81,10 @@ jobs:
       - name: Install Pydantic v2
         if: matrix.pydantic-version == 'pydantic-v2'
         run: uv pip install --upgrade "pydantic>=2.0.2,<3.0.0"
+      # TODO: Remove this once Python 3.8 is no longer supported
+      - name: Install older AnyIO in Python 3.8
+        if: matrix.python-version == '3.8'
+        run: uv pip install "anyio[trio]<4.0.0"
       - run: mkdir coverage
       - name: Test
         run: bash scripts/test.sh