[pre-commit.ci] pre-commit autoupdate

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

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ repos:
   - id: check-added-large-files
 
 - repo: https://github.com/psf/black
-  rev: "21.4b0"
+  rev: "21.4b2"
   hooks:
   - id: black
 
@@ -32,7 +32,7 @@ repos:
     args: ["--ignore-missing-imports", "--scripts-are-modules"]
 
 - repo: https://github.com/asottile/pyupgrade
-  rev: "v2.13.0"
+  rev: "v2.14.0"
   hooks:
   - id: pyupgrade