fix: use poetry installs of mypy & black in the pre-commit hook

Author: sminnee

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
  hooks:
  - id: black
  name: Format with Black
- entry: black
+ entry: poetry run black
  language: system
  types: [python]
 
@@ -36,6 +36,6 @@ repos:
 
  - id: mypy
  name: Validate types with MyPy
- entry: mypy
+ entry: poetry run mypy
  language: system
  types: [ python ]