build(deps): bump @roleypoly/rpc from 1.5.0 to 1.8.1 in /Server (#130)

Bumps [@roleypoly/rpc](https://github.com/roleypoly/rpc) from 1.5.0 to 1.8.1.
- [Release notes](https://github.com/roleypoly/rpc/releases)
- [Commits](https://github.com/roleypoly/rpc/compare/v1.5.0...v1.8.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Server/package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@improbable-eng/grpc-web-node-http-transport": "^0.12.0",
-    "@roleypoly/rpc": "^1.5.0",
+    "@roleypoly/rpc": "^1.8.1",
     "chalk": "^3.0.0",
     "dotenv": "^8.2.0",
     "eslint": "^6.6.0",