Bump npm from 6.14.13 to 7.15.0 (#2440)

Bumps [npm](https://github.com/npm/cli) from 6.14.13 to 7.15.0.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/CHANGELOG.md)
- [Commits](npm/cli@v6.14.13...v7.15.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

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

Author: dependabot-preview[bot]

packages/loopring_v1/package.json

@@ -60,7 +60,7 @@
     "events": "^1.1.1",
     "js-sha3": "^0.7.0",
     "lodash": "^4.17.14",
-    "npm": "^6.11.3",
+    "npm": "^7.15.0",
     "web3": "1.2.10"
   }
 }

packages/loopring_v2.3/package.json

@@ -40,7 +40,7 @@
     "ganache-cli": "^6.7.0",
     "mocha": "^8.2.1",
     "node": "13.12.0",
-    "npm": "^6.11.3",
+    "npm": "^7.15.0",
     "solidity-coverage": "^0.7.0",
     "solium": "^1.1.8",
     "tslint": "5.20.1",

packages/loopring_v2/package.json

@@ -39,7 +39,7 @@
     "ganache-cli": "6.9.1",
     "mocha": "^8.2.1",
     "node": "13.12.0",
-    "npm": "^6.11.3",
+    "npm": "^7.15.0",
     "solidity-coverage": "^0.7.0",
     "solium": "^1.1.8",
     "tslint": "5.20.1",

packages/loopring_v3.js/package.json

@@ -36,7 +36,7 @@
     "mocha": "^8.2.1",
     "node": "^13.10.1",
     "node-gyp": "^7.1.1",
-    "npm": "^6.13.2",
+    "npm": "^7.15.0",
     "npm-watch": "^0.6.0",
     "prettier": "^1.18.2",
     "pretty-quick": "^2.0.0",

packages/loopring_v3/package.json

@@ -74,7 +74,7 @@
     "husky": "^4.0.4",
     "mocha": "^8.0.1",
     "node": "^13.10.1",
-    "npm": "^6.14.8",
+    "npm": "^7.15.0",
     "npm-watch": "^0.6.0",
     "prettier": "^1.18.2",
     "pretty-quick": "^2.0.0",

packages/oedax_v1/package.json

@@ -49,7 +49,7 @@
     "ganache-cli": "6.9.1",
     "mocha": "^8.2.1",
     "node": "13.12.0",
-    "npm": "^6.9.0",
+    "npm": "^7.15.0",
     "npm-watch": "^0.6.0",
     "solidity-coverage": "^0.7.0",
     "solium": "^1.2.4",