Bump linters (#69)

Author: ssbarnea

.pre-commit-config.yaml

@@ -1,23 +1,23 @@
 ---
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.3.0  # Use the ref you want to point at
+    rev: v4.0.1  # Use the ref you want to point at
     hooks:
     - id: trailing-whitespace
     - id: check-yaml
     - id: end-of-file-fixer
     - id: trailing-whitespace
     - id: check-executables-have-shebangs
   - repo: https://github.com/python/black
-    rev: 21.7b0
+    rev: 21.10b0
     hooks:
       - id: black
   - repo: https://github.com/pycqa/flake8
-    rev: 3.9.2
+    rev: 4.0.1
     hooks:
       - id: flake8
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.910
+    rev: v0.910-1
     hooks:
       - id: mypy
         # empty args needed in order to match mypy cli behavior