Drop Python 3.9 and use Python 3.11 official release (#1611)

* Drop Python 3.9 and use Python 3.11 release instead of pre-release
* Run poetry lock
* Fix need for quoted 3.10 string
* Use 3.11.0-rc.2 for Python 3.11 for now
* Update minimum Python version in installation docs
* Change Python 3.11 RC version to 3.11
* Run docs and release workflows on Python 3.11
* Including Python 3.12 in allowable versions
* Restore poetry.lock from develop
* Run poetry lock --no-update
* Retrieve poetry.lock from develop and lock with --no-update
* poetry lock --no-update

.github/workflows/docs.yaml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: [ 3.9 ]
+        python-version: [ '3.11' ]
         os: [ ubuntu-latest ]
 
     steps:

.github/workflows/release.yaml

@@ -68,7 +68,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: '3.11'
 
     - name: Checkout repo
       uses: actions/checkout@v3

.github/workflows/testing_prs.yaml

@@ -37,7 +37,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ 3.9, '3.10', 3.11-dev ]
+        python-version: [ '3.10', '3.11' ]
         os: [ ubuntu-latest, macos-latest, windows-latest ]
     steps:
       - run: git config --global core.autocrlf false

.github/workflows/testing_schedule.yaml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ 3.9, '3.10', 3.11-dev ]
+        python-version: [ '3.10', '3.11' ]
         os: [ ubuntu-latest, macos-latest, windows-latest ]
     steps:
       - run: git config --global core.autocrlf false