chore(deps-dev): bump rollup from 1.11.3 to 1.12.4

Bumps [rollup](https://github.com/rollup/rollup) from 1.11.3 to 1.12.4.
- [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/v1.11.3...v1.12.4)

web3.js/package-lock.json

@@ -17823,20 +17823,20 @@
       }
     },
     "rollup": {
-      "version": "1.11.3",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.11.3.tgz",
-      "integrity": "sha512-81MR7alHcFKxgWzGfG7jSdv+JQxSOIOD/Fa3iNUmpzbd7p+V19e1l9uffqT8/7YAHgGOzmoPGN3Fx3L2ptOf5g==",
+      "version": "1.12.4",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.12.4.tgz",
+      "integrity": "sha512-sHg0F05oTMJzM592MWU8irsPx8LIFMKSCnEkcp6vp/gnj+oJ9GJEBW9hl8jUqy2L6Q2uUxFzPgvoExLbfuSODA==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^11.13.9",
+        "@types/node": "^12.0.2",
         "acorn": "^6.1.1"
       },
       "dependencies": {
         "@types/node": {
-          "version": "11.13.10",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-11.13.10.tgz",
-          "integrity": "sha512-leUNzbFTMX94TWaIKz8N15Chu55F9QSH+INKayQr5xpkasBQBRF3qQXfo3/dOnMU/dEIit+Y/SU8HyOjq++GwA==",
+          "version": "12.0.2",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.2.tgz",
+          "integrity": "sha512-5tabW/i+9mhrfEOUcLDu2xBPsHJ+X5Orqy9FKpale3SjDA17j5AEpYq5vfy3oAeAHGcvANRCO3NV3d2D6q3NiA==",
           "dev": true
         },
         "acorn": {

web3.js/package.json

@@ -111,7 +111,7 @@
     "marked": "^0.6.0",
     "prettier": "^1.14.3",
     "rimraf": "2.6.3",
-    "rollup": "1.11.3",
+    "rollup": "1.12.4",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "9.3.4",
     "rollup-plugin-json": "^4.0.0",