ci: Add secure timestamp to code signing for notarization

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: maxonary

.github/workflows/release.yml

@@ -55,7 +55,7 @@ jobs:
             CODE_SIGN_IDENTITY="Developer ID Application" \
             DEVELOPMENT_TEAM=${{ secrets.APPLE_TEAM_ID }} \
             CODE_SIGN_INJECT_BASE_ENTITLEMENTS=NO \
-            OTHER_CODE_SIGN_FLAGS="--options=runtime" \
+            OTHER_CODE_SIGN_FLAGS="--options=runtime --timestamp" \
             clean build
 
       - name: Zip app