add aurora && moonriver

package.json

@@ -24,11 +24,11 @@
     "node": "ganache-cli --port 8545 -l 0x1fffffffffffff -i 5777 -g 1 --allowUnlimitedContractSize"
   },
   "dependencies": {
+    "@truffle/hdwallet-provider": "^1.5.1",
     "@types/chai": "^4.2.11",
     "@types/es6-promisify": "^6.0.0",
     "@types/ethereumjs-abi": "^0.6.3",
     "@types/mocha": "^7.0.2",
-    "arb-ethers-web3-bridge": "^0.7.3",
     "assert": "^2.0.0",
     "axios": "^0.20.0",
     "babel-cli": "^6.26.0",
@@ -43,20 +43,19 @@
     "lodash": "^4.17.20",
     "mocha": "^7.2.0",
     "solc": "^0.6.9",
-    "truffle-hdwallet-provider": "^1.0.17",
     "ts-node": "^8.10.2",
     "typescript": "^3.9.5",
-    "web3": "^1.2.8",
+    "web3": "^1.2.9",
     "web3-core-helpers": "^1.2.8",
     "web3-eth-contract": "^1.2.8"
   },
   "devDependencies": {
-    "@truffle/hdwallet-provider": "1.4.0",
     "chai": "^4.2.0",
     "ganache-cli": "^6.9.1",
     "prettier": "^2.0.5",
     "prettier-plugin-solidity": "^1.0.0-alpha.52",
     "solidity-coverage": "^0.7.7",
-    "truffle-assertions": "^0.9.2"
+    "truffle-assertions": "^0.9.2",
+    "web3-provider-engine": "~15.0.12"
   }
 }