Set "black" version.

KelSolaar · KelSolaar · commit 7b195da14024 · 2022-02-06T20:38:45.000+13:00
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
     hooks:
     -   id: flynt
 -   repo: https://github.com/psf/black
-    rev: stable
+    rev: 22.1.0
     hooks:
     - id: black
       language_version: python3.8
