fix(deps): update dependency lru-cache to v6 (#8490)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

install/package.json

@@ -70,7 +70,7 @@
         "less": "^3.11.1",
         "lodash": "^4.17.15",
         "logrotate-stream": "^0.2.6",
-        "lru-cache": "5.1.1",
+        "lru-cache": "6.0.0",
         "material-design-lite": "^1.3.0",
         "mime": "^2.4.4",
         "mkdirp": "^1.0.4",