Remove Python 3.9 support (#600)

Author: leszekhanusz

.github/workflows/tests.yml

@@ -11,11 +11,9 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.10"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.10"]
         os: [ubuntu-24.04, windows-latest]
         exclude:
-          - os: windows-latest
-            python-version: "3.9"
           - os: windows-latest
             python-version: "3.10"
           - os: windows-latest

setup.py

@@ -21,8 +21,7 @@
     "pytest-asyncio==1.2.0",
     "pytest-console-scripts==1.4.1",
     "pytest-cov==6.0.0",
-    "vcrpy==7.0.0;python_version<='3.9'",
-    "vcrpy==8.2.1;python_version>'3.9'",
+    "vcrpy==8.2.1",
     "aiofiles",
 ]
 
@@ -32,8 +31,7 @@
     "flake8==7.1.2",
     "isort==6.0.1",
     "mypy==1.15",
-    "sphinx>=7.0.0,<8;python_version<='3.9'",
-    "sphinx>=8.1.0,<9;python_version>'3.9'",
+    "sphinx>=8.1.0,<9",
     "sphinx_rtd_theme>=3.0.2,<4",
     "sphinx-argparse==0.5.2; python_version>='3.10'",
     "sphinx-argparse==0.4.0; python_version<'3.10'",
@@ -42,8 +40,7 @@
 ] + tests_requires
 
 install_aiohttp_requires = [
-    "aiohttp>=3.11.2,<=3.13.2;python_version<='3.9'",
-    "aiohttp>=3.11.2,<4;python_version>'3.9'",
+    "aiohttp>=3.11.2,<4",
 ]
 
 install_requests_requires = [
@@ -93,7 +90,6 @@
         "Topic :: Software Development :: Libraries",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",

tox.ini

@@ -1,11 +1,10 @@
 [tox]
 envlist =
     black,flake8,import-order,mypy,manifest,
-    py{39,310,311,312,313,314,py3}
+    py{310,311,312,313,314,py3}
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
@@ -29,7 +28,7 @@ deps = -e.[test]
 commands =
     pip install -U setuptools
     ; run "tox -- tests -s" to show output for debugging
-    py{39,310,311,312,313,314,py3}: pytest {posargs:tests}
+    py{310,311,312,313,314,py3}: pytest {posargs:tests}
     py{312}: pytest {posargs:tests --cov-report=term-missing --cov=gql}
 
 [testenv:black]