fix: upgrade handlebars to 4.7.9 to resolve critical vulnerability (#28625)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/web/package.json

@@ -92,7 +92,7 @@
     "classnames": "2.3.2",
     "dompurify": "3.3.1",
     "entities": "4.5.0",
-    "handlebars": "4.7.7",
+    "handlebars": "4.7.9",
     "i18next": "23.2.3",
     "ical.js": "1.5.0",
     "ics": "2.37.0",