[pre-commit.ci] pre-commit autoupdate (#101)

updates:
- [github.com/asottile/pyupgrade: v2.13.0 → v2.14.0](asottile/pyupgrade@v2.13.0...v2.14.0)
- [github.com/psf/black: 21.4b0 → 21.4b2](psf/black@21.4b0...21.4b2)

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

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -1,12 +1,12 @@
 repos:
 - repo: https://github.com/asottile/pyupgrade
-  rev: v2.13.0
+  rev: v2.14.0
   hooks:
   - id: pyupgrade
     args: [--py36-plus]
 
 - repo: https://github.com/psf/black
-  rev: 21.4b0
+  rev: 21.4b2
   hooks:
   - id: black