ci: remove support for Python 3.9

Author: henryborchers

.github/workflows/tox_matrix.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-2019]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         frontend: ["", "PySide6"]
       fail-fast: false
     name: Python ${{ matrix.python-version }} ${{ matrix.os }} ${{ matrix.frontend }} build

pyproject.toml

@@ -8,7 +8,7 @@ maintainers = [
 authors = [
     {name="University Library at The University of Illinois at Urbana Champaign: Preservation Services", email="prescons@library.illinois.edu"}
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 license = "NCSA"
 license-files = ["LICENSE"]
 dependencies =[
@@ -23,7 +23,7 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: End Users/Desktop",
     "Natural Language :: English",
-    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
     "Operating System :: MacOS",
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX :: Linux",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{39,310,311,312,313}-{PySide6,cli}
+envlist = py{310,311,312,313}-{PySide6,cli}
 isolated_build = true
 
 [tool:pytest]

vars/runJenkinsPipeline.groovy

@@ -735,7 +735,7 @@ def call(){
                                                 axes: [
                                                     [
                                                         name: 'PYTHON_VERSION',
-                                                        values: ['3.9', '3.10', '3.11', '3.12', '3.13']
+                                                        values: ['3.10', '3.11', '3.12', '3.13']
                                                     ],
                                                     [
                                                         name: 'OS',