introduce "node >=10.0.0" restriction in package.json

package.json

@@ -1,10 +1,13 @@
 {
   "name": "electron-rpc-api",
-  "version": "6.1.1",
+  "version": "7.0.0-beta1",
   "description": "Wrapper around the Electron's IPC for building type-safe API based RPC-like and reactive interactions",
   "author": "Vladimir Yakovlev <dev.vladimir.y@gmail.com> (https://github.com/vladimiry)",
   "license": "MIT",
   "repository": "git@github.com:vladimiry/electron-rpc-api.git",
+  "engines": {
+    "node": ">=10.0.0"
+  },
   "keywords": [
     "electron",
     "pubsub",
@@ -43,7 +46,7 @@
     "rxjs": "^6.x"
   },
   "dependencies": {
-    "pubsub-to-rpc-api": "^5.2.1",
+    "pubsub-to-rpc-api": "^6.0.0-beta1",
     "pure-uuid": "^1.6.2",
     "tslib": "^2.1.0"
   },

yarn.lock

@@ -3707,10 +3707,10 @@ public-encrypt@^4.0.0:
     randombytes "^2.0.1"
     safe-buffer "^5.1.2"
 
-pubsub-to-rpc-api@^5.2.1:
-  version "5.2.1"
-  resolved "https://registry.yarnpkg.com/pubsub-to-rpc-api/-/pubsub-to-rpc-api-5.2.1.tgz#2ce62ce28cedd9a5bcd58e52cf7288f138b0b058"
-  integrity sha512-UGMaeU3fyiXcc2yOW5RdnpNj64ezCzwps7WY2QE2BfnJDZvgK1DeO9Bv9RE10SZ3EgH4XhNI3o2RrDwRXKwXmg==
+pubsub-to-rpc-api@^6.0.0-beta1:
+  version "6.0.0-beta1"
+  resolved "https://registry.yarnpkg.com/pubsub-to-rpc-api/-/pubsub-to-rpc-api-6.0.0-beta1.tgz#b890b6218a0fc76f5889170c32385a3a8d7c94e6"
+  integrity sha512-aorV4LRfjm0CxrB9Ie3w6G3J9siTTHJvd8KE3sEjn/mhCD29ejVV9p4ppVay9rc2dgOGkvI98GVdcXAkcGNfQA==
   dependencies:
     jsan "^3.1.13"
     pure-uuid "^1.6.2"