[pre-commit.ci] pre-commit autoupdate (#2077)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -25,7 +25,7 @@ repos:
   - id: black
     args: [--safe]
 - repo: https://github.com/asottile/blacken-docs
-  rev: v1.9.2
+  rev: v1.10.0
   hooks:
   - id: blacken-docs
     additional_dependencies: [black==20.8b1]
@@ -39,12 +39,12 @@ repos:
   - id: tox-ini-fmt
     args: ["-p", "fix_lint"]
 - repo: https://github.com/asottile/setup-cfg-fmt
-  rev: v1.16.0
+  rev: v1.17.0
   hooks:
   - id: setup-cfg-fmt
     args: [--min-py3-version, "3.4"]
 - repo: https://github.com/PyCQA/flake8
-  rev: "3.8.4"
+  rev: "3.9.0"
   hooks:
   - id: flake8
     additional_dependencies: ["flake8-bugbear == 20.1.4"]