Remove excessive-permissions from zizmor ignore list

These four workflows now have explicit top-level permissions set
to contents:read, so the excessive-permissions finding no longer
applies.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hsbt

.github/zizmor.yml

@@ -10,12 +10,6 @@ rules:
   dependabot-cooldown:
     ignore:
       - dependabot.yml
-  excessive-permissions:
-    ignore:
-      - post_push.yml
-      - publish.yml
-      - release.yml
-      - wsl.yml
   misfeature:
     ignore:
       - mingw.yml