Bump ws and engine.io-client in /src/ifctester/webapp

Bumps [ws](https://github.com/websockets/ws) and [engine.io-client](https://github.com/socketio/socket.io). These dependencies needed to be updated together.

Updates `ws` from 8.17.1 to 8.21.0
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/compare/8.17.1...8.21.0)

Updates `engine.io-client` from 6.6.3 to 6.6.6
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/main/CHANGELOG.md)
- [Commits](https://github.com/socketio/socket.io/compare/engine.io-client@6.6.3...engine.io-client@6.6.6)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 8.21.0
  dependency-type: indirect
- dependency-name: engine.io-client
  dependency-version: 6.6.6
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

src/ifctester/webapp/package-lock.json

@@ -1721,35 +1721,18 @@
       "license": "MIT"
     },
     "node_modules/engine.io-client": {
-      "version": "6.6.3",
-      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.6.3.tgz",
-      "integrity": "sha512-T0iLjnyNWahNyv/lcjS2y4oE358tVS/SYQNxYXGAJ9/GLgH4VCvOQ/mhTjqU88mLZCQgiG8RIegFHYCdVC+j5w==",
+      "version": "6.6.6",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.6.6.tgz",
+      "integrity": "sha512-iY6QdftLQ9pyiPoX082bpf/u1UewnOaJrtJIF9T0++QB34lZrj0uP+Q/bj8AlUsAxqhnkTV2BS8SBZSxOmoV5Q==",
       "license": "MIT",
       "dependencies": {
         "@socket.io/component-emitter": "~3.1.0",
-        "debug": "~4.3.1",
+        "debug": "~4.4.1",
         "engine.io-parser": "~5.2.1",
-        "ws": "~8.17.1",
+        "ws": "~8.21.0",
         "xmlhttprequest-ssl": "~2.1.1"
       }
     },
-    "node_modules/engine.io-client/node_modules/debug": {
-      "version": "4.3.7",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.7.tgz",
-      "integrity": "sha512-Er2nc/H7RrMXZBFCEim6TCmMk02Z8vLC2Rbi1KEBggpo0fS6l0S1nnapwmIi3yW/+GOJap1Krg4w0Hg80oCqgQ==",
-      "license": "MIT",
-      "dependencies": {
-        "ms": "^2.1.3"
-      },
-      "engines": {
-        "node": ">=6.0"
-      },
-      "peerDependenciesMeta": {
-        "supports-color": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/engine.io-parser": {
       "version": "5.2.3",
       "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.2.3.tgz",
@@ -3358,9 +3341,9 @@
       }
     },
     "node_modules/ws": {
-      "version": "8.17.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
-      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
+      "version": "8.21.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.0.tgz",
+      "integrity": "sha512-Vsp28b7DRcimFQvrqu2Wek3z1iYxDCWqHYB8Qsnk/S4RfaCQzPGPyBNuVjJV3cd6UiKtUtp6sNM77gWvzcCH+g==",
       "license": "MIT",
       "engines": {
         "node": ">=10.0.0"