[pre-commit.ci] pre-commit autoupdate (#28)

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

@@ -22,7 +22,7 @@ repos:
     -   id: rst-inline-touching-normal
     -   id: text-unicode-replacement-char
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.21.0
+    rev: v2.21.2
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]
@@ -35,7 +35,7 @@ repos:
     hooks:
     -   id: setup-cfg-fmt
 -   repo: https://github.com/psf/black
-    rev: 21.6b0
+    rev: 21.7b0
     hooks:
     -   id: black
 -   repo: https://github.com/asottile/blacken-docs
@@ -65,7 +65,7 @@ repos:
             Pygments,
         ]
 -   repo: https://github.com/PyCQA/doc8
-    rev: 0.9.0a1
+    rev: 0.9.0
     hooks:
     -   id: doc8
 -   repo: https://github.com/econchick/interrogate