Drop python 3.6 and update sanic, httpx, websockets dependencies (#810)

* drop python 3.6 and update sanic

* more updates

* add changelog entry

* fix code quality fail

* make mypy happy

* add missing docstring

.github/workflows/continuous-integration.yml

@@ -89,7 +89,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.7, 3.8]
 
     steps:
     - name: Checkout git repository 🕝
@@ -124,7 +124,7 @@ jobs:
       run: make test
 
     - name: Send Coverage Report 📊
-      if: matrix.python-version == 3.6
+      if: matrix.python-version == 3.7
       env:
         COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         COVERALLS_SERVICE_NAME: github
@@ -286,10 +286,10 @@ jobs:
     - name: Checkout git repository 🕝
       uses: actions/checkout@v2
 
-    - name: Set up Python 3.6 🐍
+    - name: Set up Python 3.7 🐍
       uses: actions/setup-python@v1
       with:
-        python-version: 3.6
+        python-version: 3.7
 
     - name: Read Poetry Version 🔢
       run: |

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 repos:
 -   repo: https://github.com/ambv/black
-    rev: 19.10b0
+    rev: 22.6.0
     hooks:
     - id: black

Makefile

@@ -36,6 +36,9 @@ clean:
 types:
 	poetry run mypy rasa_sdk
 
+formatter:
+	poetry run black rasa_sdk tests
+
 lint:
 	poetry run flake8 rasa_sdk tests --extend-ignore D
 	poetry run black --check rasa_sdk tests

changelog/810.removal.md

@@ -0,0 +1,2 @@
+Removed Python 3.6 support.
+Updated several dependencies: `sanic`, `httpx`, `websockets`.