Update supported python versions

The list in the classifiers is quite outdated. This updates the list
according to the current tested versions.

Note that python 3.7 is already EOL, so this change removes the test
with python 3.7 and explicitly requires >=3.8 .

.github/workflows/tox.yml

@@ -22,7 +22,7 @@ jobs:
       # max-parallel: 6
       matrix:
         os: [ubuntu-latest]  # [macos-latest, ubuntu-latest, windows-latest]
-        python: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy3.9']
+        python: ['3.8', '3.9', '3.10', '3.11', 'pypy3.9']
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3

setup.py

@@ -53,18 +53,17 @@ def data_for(filename):
     entry_points={
         "pytest11": ["pytest-betamax = betamax.fixtures.pytest"]
     },
+    python_requires='>=3.8',
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved",
         "Intended Audience :: Developers",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
+        "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",
         "Programming Language :: Python :: Implementation :: CPython",
     ]
 )