fix(deps): update polkadot-js/api, and rxjs (#830)

* update polkadot.js and rxjs

* fix import for Observable to rxjs

* dedupe

package.json

@@ -50,17 +50,17 @@
     "test:test-release": "yarn start:test-release"
   },
   "dependencies": {
-    "@polkadot/api": "^7.5.2-2",
+    "@polkadot/api": "^7.6.1",
     "@polkadot/apps-config": "0.103.1",
     "@polkadot/util-crypto": "^8.3.3",
-    "@polkadot/x-rxjs": "^6.11.1",
     "@substrate/calc": "^0.2.7",
     "argparse": "^2.0.1",
     "confmgr": "1.0.7",
     "express": "^4.17.1",
     "express-winston": "^4.1.0",
     "http-errors": "^1.8.1",
     "lru-cache": "^6.0.0",
+    "rxjs": "^7.5.2",
     "winston": "^3.3.3"
   },
   "devDependencies": {
@@ -75,11 +75,11 @@
     "tsc-watch": "^4.4.0"
   },
   "resolutions": {
-    "@polkadot/api": "7.5.2-2",
+    "@polkadot/api": "7.6.1",
     "@polkadot/keyring": "8.3.3",
     "@polkadot/networks": "8.3.3",
-    "@polkadot/types": "7.5.2-2",
-    "@polkadot/types-known": "7.5.2-2",
+    "@polkadot/types": "7.6.1",
+    "@polkadot/types-known": "7.6.1",
     "@polkadot/util": "8.3.3",
     "@polkadot/util-crypto": "8.3.3",
     "@polkadot/wasm-crypto": "4.5.1",

src/test-helpers/typeFactory.ts

@@ -8,7 +8,7 @@ import {
 	InterfaceTypes,
 	Registry,
 } from '@polkadot/types/types';
-import { Observable } from '@polkadot/x-rxjs';
+import { Observable } from 'rxjs';
 
 /**
  * Type to fulfill StorageEntryBase regarding storage keys