chore(deps-dev): bump rollup from 1.15.2 to 2.0.3

Bumps [rollup](https://github.com/rollup/rollup) from 1.15.2 to 2.0.3.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v1.15.2...v2.0.3)

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

web3.js/package-lock.json

@@ -20431,28 +20431,12 @@
       }
     },
     "rollup": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.2.tgz",
-      "integrity": "sha512-NsH0Mjqk/RtlhSIJopNUiCYi3r3zudHxg9Cj6Or96QnJw/suab0/PjL50/GRNE5omvXEG2F9K4a334ddvA1Txg==",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.0.3.tgz",
+      "integrity": "sha512-OjTD1pmtqCFaaoTl+zf3dXlG0FR1PudauQzAYmP5hDLLrrisXP6EuzAx9MY6En5bv61e8F6JGcVQxsVOcqFTUA==",
       "dev": true,
       "requires": {
-        "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.10",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.10.tgz",
-          "integrity": "sha512-LcsGbPomWsad6wmMNv7nBLw7YYYyfdYcz6xryKYQhx89c3XXan+8Q6AJ43G5XDIaklaVkK3mE4fCb0SBvMiPSQ==",
-          "dev": true
-        },
-        "acorn": {
-          "version": "6.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.3.0.tgz",
-          "integrity": "sha512-/czfa8BwS88b9gWQVhc8eknunSA2DoJpJyTQkhheIf5E48u1N0R4q/YxxsAeqRrmK9TQ/uYfgLDfZo91UlANIA==",
-          "dev": true
-        }
+        "fsevents": "~2.1.2"
       }
     },
     "rollup-plugin-babel": {

web3.js/package.json

@@ -120,7 +120,7 @@
     "marked": "^0.8.0",
     "prettier": "^1.14.3",
     "rimraf": "3.0.2",
-    "rollup": "1.15.2",
+    "rollup": "2.0.3",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-copy": "^3.3.0",