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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116

Author: snyk-bot

package.json

@@ -139,7 +139,7 @@
     "workbox-precaching": "^6.5.4",
     "workbox-routing": "^6.5.4",
     "workbox-strategies": "^6.5.4",
-    "workbox-webpack-plugin": "^6.5.4",
+    "workbox-webpack-plugin": "^7.4.0",
     "workbox-window": "^6.5.4",
     "ws": "^8.10.0"
   },