chore: add handlebars dependency to custom UI and messaging apps

Author: likawka

apps/custom-ui-app-docusign/package-lock.json

@@ -15,6 +15,7 @@
         "express": "^4.22.1",
         "express-session": "^1.17.3",
         "form-data": "^4.0.5",
+        "handlebars": "^4.7.9",
         "hbs": "^4.2.0",
         "jsonwebtoken": "^9.0.3",
         "jws": "^4.0.1",

apps/custom-ui-app-docusign/package.json

@@ -24,6 +24,7 @@
     "dotenv": "^16.0.1",
     "express": "^4.22.1",
     "form-data": "^4.0.5",
+    "handlebars": "^4.7.9",
     "hbs": "^4.2.0",
     "knex": "^2.4.0",
     "multer": "^1.4.5-lts.1",

apps/messaging-app-extn-playground/package-lock.json

@@ -20,6 +20,7 @@
     "axios": "^1.7.9",
     "express": "^4.22.1",
     "form-data": "^4.0.5",
+    "handlebars": "^4.7.9",
     "hbs": "^4.2.0",
     "knex": "^3.1.0",
     "passport": "^0.7.0",