build(python)!: Drop support for Python 3.8 (EOL) and expose support for 3.13

Author: noirbizarre

Diff for: .github/workflows/pythonpackage.yml

@@ -6,7 +6,7 @@ jobs:
   python-check:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         platform: [ubuntu-20.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:

Diff for: docs/README.md

@@ -41,7 +41,7 @@ descriptive commits.
 
 ## Requirements
 
-[Python](https://www.python.org/downloads/) `3.8+`
+[Python](https://www.python.org/downloads/) `3.9+`
 
 [Git][gitscm] `1.8.5.2+`
 

Diff for: docs/tutorials/gitlab_ci.md

@@ -74,7 +74,7 @@ test:
 
 auto-bump:
   stage: auto-bump
-  image: python:3.8
+  image: python:3.9
   before_script:
     - "which ssh-agent || ( apt-get update -qy && apt-get install openssh-client -qqy )"
     - eval `ssh-agent -s`