Add python 3.11 support

Author: seratch

.github/workflows/py_compile.yml

@@ -10,7 +10,7 @@ jobs:
     timeout-minutes: 5
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

setup.py

@@ -14,10 +14,10 @@
     long_description = fh.read()
 
 test_dependencies = [
-    "slack_sdk>=3.11,<4",
+    "slack_sdk>=3.15,<4",
     "pytest>=6,<7",
     "pytest-cov>=3,<4",
-    "black==22.1.0",
+    "black==22.10.0",
 ]
 
 setuptools.setup(
@@ -48,6 +48,7 @@
         "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",
         "Operating System :: OS Independent",
     ],