[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 20.8b1 → 21.4b0](psf/black@20.8b1...21.4b0)
- [github.com/asottile/reorder_python_imports: v2.4.0 → v2.5.0](asottile/reorder-python-imports@v2.4.0...v2.5.0)
- [github.com/asottile/pyupgrade: v2.12.0 → v2.13.0](asottile/pyupgrade@v2.12.0...v2.13.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 21.4b0
     hooks:
     -   id: black
         args: [--safe, --quiet]
@@ -29,12 +29,12 @@ repos:
           - flake8-typing-imports==1.9.0
           - flake8-docstrings==1.5.0
 -   repo: https://github.com/asottile/reorder_python_imports
-    rev: v2.4.0
+    rev: v2.5.0
     hooks:
     -   id: reorder-python-imports
         args: ['--application-directories=.:src', --py36-plus]
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.12.0
+    rev: v2.13.0
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]