drop support for Python 3.8

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v3
         with:
-          python-version: '3.8'
+          python-version: '3.9'
       - name: Install build and deploy dependencies
         run: |
           python -m pip install -U poetry twine

.github/workflows/test-release.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v3
         with:
-          python-version: '3.8'
+          python-version: '3.9'
       - name: Install deploy dependencies
         run: |
           python -m pip install -U poetry twine

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
     # runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
         # os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - name: Checkout

.github/workflows/unittest.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v3
         with:
-          python-version: '3.8'
+          python-version: '3.9'
       - name: Execute tests
         run: |
           python -m pip install -U poetry

.snippets/14.md

@@ -1,11 +1,14 @@
-## Build package with Python 3.8
+## Build package with Python 3.9
 <!--
 type: bugfix
 scope: all
 affected: all
 -->
 
 - to be compatible as speficied in `pyproject.toml` classifier list
-- add Python matrix to test workflow with Python versions `['3.8', '3.9', '3.10', '3.11']`
+- add Python matrix to test workflow with Python versions `['3.9', '3.10', '3.11']`
 - use `actions/checkout` with version `v4`
-- use Python 3.8 compatible typing, replace `|` with `Union`
+- use Python 3.9 compatible typing
+    - replace `|` with `Union`
+    - use `List` instead of `list` for typing
+    - use `Dict` instead of `dict` for typing

pyproject.toml

@@ -22,7 +22,6 @@ classifiers = [
   "Topic :: Software Development :: Version Control",
   "License :: OSI Approved :: MIT License",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -45,7 +44,7 @@ changelog-generator = 'snippets2changelog.cli:main'
 changelog2version = "^0.10"
 GitPython = "~3.1.43"
 jinja2 = "^3.1.4"
-python = "^3.8"
+python = "^3.9"
 pyyaml = "~6.0"
 
 [tool.poetry.group.dev.dependencies]