Bump supported fastapi versions (#1110)

* Bump supported fastapi version to <=0.97, change all fastapi tests from starlette client to httpx.AsyncClient

* Add lifecycle manager to fastapi tests

* Fix coverage

* Add python 3.11 to test suite, bump version

.github/workflows/test-package.yml

@@ -17,7 +17,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != 'collerek/ormar'
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", 3.11]
       fail-fast: false
     services:
       mysql:
@@ -49,7 +49,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install poetry==1.4.1
+        python -m pip install poetry==1.4.2
         poetry install --extras "all"
       env:
         POETRY_VIRTUALENVS_CREATE: false