etc: drop Python 3.7 from CI

Author: zbjornson

.github/workflows/publish-pypi.yml

@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@master
-    - name: Set up Python 3.7
+    - name: Set up Python 3.8
       uses: actions/setup-python@v2
       with:
-        python-version: 3.7
+        python-version: 3.8
     - name: Install pep517
       run: >-
         python -m

.github/workflows/push.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v3
       - name: Setup Python