fix(bch-js): Updating to v4.15.2 to test rate limit idea

package.json

@@ -29,7 +29,7 @@
     "node": ">=10.15.1"
   },
   "dependencies": {
-    "@psf/bch-js": "^4.11.1",
+    "@psf/bch-js": "^4.15.2",
     "apidoc": "^0.26.0",
     "axios": "^0.21.1",
     "bitcore-lib-cash": "^8.23.1",
@@ -69,7 +69,7 @@
     "nock": "^13.0.5",
     "nyc": "^15.0.0",
     "prettier": "^2.0.0",
-    "semantic-release": "^17.3.1",
+    "semantic-release": "^17.3.9",
     "sinon": "^9.0.0",
     "standard": "^14.3.1"
   },