fix(store-devtools): add @angular/core as peer dependency (#4478)

Closes #4479

Author: janicmikes

modules/store-devtools/package.json

@@ -20,6 +20,7 @@
   },
   "homepage": "https://github.com/ngrx/platform#readme",
   "peerDependencies": {
+    "@angular/core": "^18.0.0",
     "@ngrx/store": "18.0.2",
     "rxjs": "^6.5.3 || ^7.5.0"
   },