[pre-commit] Bump black to 26.5.0

Ran "pre-commit autoupdate".  No changes in formatting.

.pre-commit-config.yaml

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5b1af9a..6a71a5f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -42,7 +42,7 @@
 default_stages: [pre-commit]
 repos:
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 26.3.1
+    rev: 26.5.0
     hooks:
       - id: black
         types_or: [file]