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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-COOKIE-8163060
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116

package.json

@@ -23,14 +23,14 @@
   "dependencies": {
     "@hapi/boom": "^10.0.0",
     "@koa/router": "^10.0.0",
-    "@ladjs/api": "^9.0.2",
+    "@ladjs/api": "^14.1.7",
     "@ladjs/env": "^3.0.0",
     "@ladjs/graceful": "^2.0.1",
     "@ladjs/shared-config": "^7.0.3",
     "@slack/web-api": "^6.0.0",
     "axe": "^8.0.0",
     "crypto-random-string": "^5.0.0",
-    "del": "^6.0.0",
+    "del": "^8.0.0",
     "humanize-string": "^3.0.0",
     "ip": "^1.1.5",
     "koa-jwt": "^4.0.1",