resolve npm audit vulnerabilities

Author: Vlasis-Perdikidis

lambdas/letter-updates-transformer/package.json

@@ -5,8 +5,8 @@
     "@internal/datastore": "^0.1.0",
     "@internal/helpers": "^0.1.0",
     "@nhsdigital/nhs-notify-event-schemas-supplier-api": "*",
-    "aws-lambda": "^1.0.7",
-    "esbuild": "^0.24.0",
+    "aws-lambda": "^1.0.6",
+    "esbuild": "^0.27.2",
     "pino": "^10.1.0",
     "zod": "^4.1.13"
   },

lambdas/upsert-letter/package.json

@@ -7,8 +7,8 @@
     "@nhsdigital/nhs-notify-event-schemas-letter-rendering-v1": "npm:@nhsdigital/nhs-notify-event-schemas-letter-rendering@^1.1.5",
     "@nhsdigital/nhs-notify-event-schemas-supplier-api": "^1.0.5",
     "@types/aws-lambda": "^8.10.148",
-    "aws-lambda": "^1.0.7",
-    "esbuild": "^0.24.0",
+    "aws-lambda": "^1.0.6",
+    "esbuild": "^0.27.2",
     "pino": "^9.7.0",
     "zod": "^4.1.11"
   },