remove python 3.12 from github builds

.github/workflows/master-build.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11"]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/python.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11"]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

tox.ini

@@ -2,7 +2,7 @@
 minversion = 2.9.0
 skipdist = True
 skip_missing_interpreters = true
-envlist = pep8,py{39,310,311,312}
+envlist = pep8,py{39,310,311}
 #requires = tox-pipenv
 #           pip==22.0.4
 #           pip-tools==5.4.0