Set minimum supported Python version to 3.8

.github/workflows/ci.yaml

@@ -11,7 +11,7 @@ jobs:
     name: Pre-commit
     strategy:
       matrix:
-        python-version: [3.6]
+        python-version: [3.8]
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repository

gpsoauth/__init__.py

@@ -54,7 +54,6 @@ def init_poolmanager(self, *args, **kwargs):
         context.options |= ssl.OP_NO_COMPRESSION
         context.options |= ssl.OP_NO_SSLv2
         context.options |= ssl.OP_NO_SSLv3
-        # pylint: disable=attribute-defined-outside-init
         context.post_handshake_auth = True
         context.verify_mode = ssl.CERT_REQUIRED
         self.poolmanager = PoolManager(*args, ssl_context=context, **kwargs)

pyproject.toml

@@ -11,8 +11,6 @@ classifiers = [
     "Operating System :: OS Independent",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.6",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
 ]
@@ -21,7 +19,7 @@ homepage = "https://github.com/simon-weber/gpsoauth"
 repository = "https://github.com/simon-weber/gpsoauth"
 
 [tool.poetry.dependencies]
-python = "^3.6.1"
+python = "^3.8"
 pycryptodomex = "^3.10.1"
 requests = "^2.25.1"
 importlib-metadata = "^3.10.0"
@@ -50,6 +48,7 @@ combine_as_imports = true
 [tool.pylint.master]
 extension-pkg-whitelist = [
     "binascii",
+    "_ssl",
 ]
 
 [tool.pylint.format]