workflows/zizmor: Update to latest version (#213922)

This is required to handle the new import syntax for same-repository
actions:

https://github.blog/changelog/2026-07-30-reference-same-repository-actions-with-self-repository-syntax/
(cherry picked from commit da2a4685fe5c23f90c8357c2d6732396adbe74be)

.github/workflows/zizmor.yml

@@ -26,4 +26,4 @@ jobs:
           persist-credentials: false
 
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@6599ee8b7a49aef6a770f63d261d214911a7ce02 # v0.6.0
+        uses: zizmorcore/zizmor-action@3dc1ecc9bcb9e94e9b2c709687979e1298497054 # v0.6.2