feat: drop support for python 3.8

.github/workflows/ci.yml

@@ -100,7 +100,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: ['3.8', '3.12']
+        python-version: ['3.9', '3.12']
         db-backend: [mysql, postgres]
     steps:
     - uses: actions/checkout@v4

CONTRIBUTING.md

@@ -31,7 +31,7 @@ If you decide to work on the issue yourself, please wait until you received some
 
 ## How to set up your development environment
 
-You need [Python 3.8+](https://www.python.org/downloads).
+You need [Python 3.9+](https://www.python.org/downloads).
 
 Install the package with development requirements:
 

pyproject.toml

@@ -17,7 +17,7 @@ license = {text = "Apache-2.0"}
 authors = [
   {name = "RDMO Arbeitsgemeinschaft", email = "[email protected]"},
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: Web Environment",
@@ -27,7 +27,6 @@ classifiers = [
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",