[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 21.6b0 → 21.7b0](psf/black@21.6b0...21.7b0)
- [github.com/asottile/pyupgrade: v2.21.0 → v2.21.2](asottile/pyupgrade@v2.21.0...v2.21.2)

.pre-commit-config.yaml

@@ -6,7 +6,7 @@ default_language_version:
 minimum_pre_commit_version: "1.20.0"
 repos:
   - repo: https://github.com/psf/black
-    rev: 21.6b0
+    rev: 21.7b0
     hooks:
     - id: black
       args:
@@ -19,7 +19,7 @@ repos:
       args:
       - --config=./setup.cfg
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.21.0
+    rev: v2.21.2
     hooks:
     - id: pyupgrade
       args: