Add Python 3.10 to the supported versions (#1129)

Author: seratch

.github/workflows/ci-build.yml

@@ -8,11 +8,11 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     timeout-minutes: 10
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     env:
       PYTHON_SLACK_SDK_MOCK_SERVER_MODE: 'threading'
       #CI_UNSTABLE_TESTS_SKIP_ENABLED: '1'

setup.py

@@ -17,7 +17,7 @@
     long_description = readme.read()
 
 validate_dependencies = [
-    "pytest>=5.4,<6",
+    "pytest>=6.2.5,<7",
     "pytest-asyncio<1",  # for async
     "Flask-Sockets>=0.2,<1",
     "Flask>=1,<2",  # TODO: Flask-Sockets is not yet compatible with Flask 2.x
@@ -277,6 +277,7 @@ def run(self):
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
     keywords="slack slack-api web-api slack-rtm websocket chat chatbot chatops",
     packages=find_packages(
@@ -310,7 +311,8 @@ def run(self):
             # InstallationStore/OAuthStateStore
             "SQLAlchemy>=1,<2",
             # Socket Mode
-            "websockets>=9.1,<10",
+            # websockets 9 is not compatible with Python 3.10
+            "websockets>=10,<11" if sys.version_info.minor > 6 else "websockets>=9.1,<10",
             "websocket-client>=1,<2",
         ],
     },