[pre-commit.ci] pre-commit autoupdate (#40)

updates:
- [github.com/asottile/pyupgrade: v2.16.0 → v2.19.4](asottile/pyupgrade@v2.16.0...v2.19.4)
- [github.com/psf/black: 21.5b1 → 21.6b0](psf/black@21.5b1...21.6b0)

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

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ repos:
     -   id: debug-statements
     -   id: end-of-file-fixer
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.16.0
+    rev: v2.19.4
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]
@@ -19,7 +19,7 @@ repos:
     hooks:
     -   id: reorder-python-imports
 -   repo: https://github.com/psf/black
-    rev: 21.5b1
+    rev: 21.6b0
     hooks:
     -   id: black
 -   repo: https://github.com/asottile/blacken-docs