[pre-commit.ci] pre-commit autoupdate (#228)

updates:
- [github.com/asottile/pyupgrade: v2.13.0 → v2.15.0](asottile/pyupgrade@v2.13.0...v2.15.0)
- [github.com/asottile/pyupgrade: v2.13.0 → v2.15.0](asottile/pyupgrade@v2.13.0...v2.15.0)
- [github.com/psf/black: 21.4b0 → 21.5b1](psf/black@21.4b0...21.5b1)
- [github.com/PyCQA/flake8: 3.9.1 → 3.9.2](PyCQA/flake8@3.9.1...3.9.2)

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

.pre-commit-config.yaml

@@ -5,7 +5,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.13.0
+    rev: v2.15.0
     hooks:
       - id: pyupgrade
   - repo: https://github.com/myint/autoflake
@@ -18,15 +18,15 @@ repos:
     hooks:
       - id: isort
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.13.0
+    rev: v2.15.0
     hooks:
       - id: pyupgrade
   - repo: https://github.com/psf/black
-    rev: 21.4b0
+    rev: 21.5b1
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
-    rev: 3.9.1
+    rev: 3.9.2
     hooks:
       - id: flake8
         additional_dependencies: [flake8-docstrings]