Add official support for Python 3.9 & 3.10 (#47)

* Import Mapping from the new appropriate location

* Add typing-extensions to allow dev w/Python 3.6

* Add official support/testing for Python 3.9 & 3.10

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         platform: [ ubuntu-latest, macos-latest, windows-latest ]
-        python-version: [ 3.6, 3.7, 3.8 ]
+        python-version: [ 3.6, 3.7, 3.8, 3.9, "3.10" ]
         exclude:
           - platform: macos-latest
             python-version: 3.6
@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64

Pipfile

@@ -14,6 +14,7 @@ docutils = "*"
 responses = "*"
 atomicwrites = "*"
 importlib-metadata = "*"
+typing-extensions = "*"
 
 [packages]
 aws-okta-processor = {path = ".", editable=true}