build(Workflows): Updated Python versions.

Author: rbeyer

.github/workflows/code-cover.yml

@@ -7,7 +7,7 @@ name: Code Coverage
 on: [push, pull_request]
 
 env:
-  python-version: 3.7
+  python-version: 3.9
 
 jobs:
   coverage:

.github/workflows/publish-to-pypi.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.6
+        python-version: 3.9
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/python-test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
         # install-target: ['.', '.[allopts]']
 
     steps: