fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-UNDICI-8641354

package-lock.json

@@ -22,7 +22,7 @@
         "ibm-watson": "^8.0.0",
         "microsoft-cognitiveservices-speech-sdk": "1.38.0",
         "openai": "^4.25.0",
-        "undici": "^6.4.0"
+        "undici": "^6.21.1"
       },
       "devDependencies": {
         "config": "^3.3.11",
@@ -7180,11 +7180,12 @@
       }
     },
     "node_modules/undici": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.11.1.tgz",
-      "integrity": "sha512-KyhzaLJnV1qa3BSHdj4AZ2ndqI0QWPxYzaIOio0WzcEJB9gvuysprJSLtpvc2D9mhR9jPDUk7xlJlZbH2KR5iw==",
+      "version": "6.21.1",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.1.tgz",
+      "integrity": "sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==",
+      "license": "MIT",
       "engines": {
-        "node": ">=18.0"
+        "node": ">=18.17"
       }
     },
     "node_modules/undici-types": {
@@ -12855,9 +12856,9 @@
       }
     },
     "undici": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.11.1.tgz",
-      "integrity": "sha512-KyhzaLJnV1qa3BSHdj4AZ2ndqI0QWPxYzaIOio0WzcEJB9gvuysprJSLtpvc2D9mhR9jPDUk7xlJlZbH2KR5iw=="
+      "version": "6.21.1",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.1.tgz",
+      "integrity": "sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ=="
     },
     "undici-types": {
       "version": "5.26.5",

package.json

@@ -39,7 +39,7 @@
     "ibm-watson": "^8.0.0",
     "microsoft-cognitiveservices-speech-sdk": "1.38.0",
     "openai": "^4.25.0",
-    "undici": "^6.4.0"
+    "undici": "^6.21.1"
   },
   "devDependencies": {
     "config": "^3.3.11",