chore(deps-dev): bump cross-env from 5.2.0 to 5.2.1

Bumps [cross-env](https://github.com/kentcdodds/cross-env) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/kentcdodds/cross-env/releases)
- [Changelog](https://github.com/kentcdodds/cross-env/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kentcdodds/cross-env/compare/v5.2.0...v5.2.1)

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

web3.js/package-lock.json

@@ -6453,28 +6453,12 @@
       }
     },
     "cross-env": {
-      "version": "5.2.0",
-      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-5.2.0.tgz",
-      "integrity": "sha512-jtdNFfFW1hB7sMhr/H6rW1Z45LFqyI431m3qU6bFXcQ3Eh7LtBuG3h74o7ohHZ3crrRkkqHlo4jYHFPcjroANg==",
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-5.2.1.tgz",
+      "integrity": "sha512-1yHhtcfAd1r4nwQgknowuUNfIT9E8dOMMspC36g45dN+iD1blloi7xp8X/xAIDnjHWyt1uQ8PHk2fkNaym7soQ==",
       "dev": true,
       "requires": {
-        "cross-spawn": "^6.0.5",
-        "is-windows": "^1.0.0"
-      },
-      "dependencies": {
-        "cross-spawn": {
-          "version": "6.0.5",
-          "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
-          "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
-          "dev": true,
-          "requires": {
-            "nice-try": "^1.0.4",
-            "path-key": "^2.0.1",
-            "semver": "^5.5.0",
-            "shebang-command": "^1.2.0",
-            "which": "^1.2.9"
-          }
-        }
+        "cross-spawn": "^6.0.5"
       }
     },
     "cross-spawn": {

web3.js/package.json

@@ -92,7 +92,7 @@
     "babel-eslint": "10.0.3",
     "babel-plugin-module-resolver": "3.2.0",
     "codecov": "^3.0.4",
-    "cross-env": "5.2.0",
+    "cross-env": "5.2.1",
     "elfy": "^0.1.0",
     "enzyme": "3.10.0",
     "esdoc": "^1.1.0",