Drop support for EOL Python 3.9

Author: hugovk

.github/workflows/ci.yml

@@ -9,13 +9,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
           allow-prereleases: true
@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         check_formatting: ['0']
         extra_name: ['']
         include:
@@ -44,9 +44,9 @@ jobs:
             extra_name: ', check formatting'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         if: "!endsWith(matrix.python, '-dev')"
         with:
           python-version: ${{ matrix.python }}
@@ -72,12 +72,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
           allow-prereleases: true

pyproject.toml

@@ -26,7 +26,7 @@ classifiers = [
     "Intended Audience :: Developers",
     "Development Status :: 5 - Production/Stable",
 ]
-requires-python = ">= 3.9"
+requires-python = ">= 3.10"
 dynamic = ["version"]
 
 [project.urls]