Drop Python 3.6

We can't easily test on ADO with this version any more so easier to just drop it.

azure-pipelines.yml

@@ -6,15 +6,17 @@ jobs:
     vmImage: 'macOS-latest'
   strategy:
     matrix:
-      Python36:
-        python.version: '3.6'
       Python37:
         python.version: '3.7'
       Python38:
         python.version: '3.8'
       Python39:
         python.version: '3.9'
-    maxParallel: 4
+      Python310:
+        python.version: '3.10'
+      Python311:
+        python.version: '3.11'
+    maxParallel: 8
 
   steps:
   - task: UsePythonVersion@0

pyproject.toml

@@ -31,7 +31,7 @@ classifiers = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.6.2"
+python = "^3.7.0"
 deserialize = "^1.5.1"
 requests = "^2.21"
 tenacity = "^6.2.0"