fixed errors that were throwing errors for docs (#48)

* testing 3.11

* changed pytest to 8.1.1

* changed pluggy to 8.1.1

* testing biopython 1.82

* removing py from requirements.txt

* updated setup.py and change log for support for python version 3.11

* updating python version docs to 3.9

* updated pip files to python 3.9

.github/workflows/ci.yml

@@ -72,7 +72,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@master
         with:
-          python-version: 3.7
+          python-version: 3.9
       - name: Install pipenv
         uses: dschep/install-pipenv-action@v1
       - name: Build docs

Pipfile

@@ -48,4 +48,4 @@ Cython = "==0.29.16"
 Pygments = "==2.7.4"
 
 [requires]
-python_version = "3.7"
+python_version = "3.9"