fix: update dependency runtypes to v7

Author: renovate[bot]

backend/package-lock.json

@@ -58,7 +58,7 @@
     "lz-string": "1.5.0",
     "nocache": "4.0.0",
     "node-cache": "5.1.2",
-    "runtypes": "6.7.0",
+    "runtypes": "7.0.4",
     "sharp": "0.34.3",
     "short-uuid": "5.2.0",
     "source-map-support": "0.5.21",