chore(deps-dev): bump rollup from 1.1.0 to 1.1.1

Bumps [rollup](https://github.com/rollup/rollup) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/commits)

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

web3.js/package-lock.json

@@ -14014,9 +14014,9 @@
       }
     },
     "rollup": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.1.0.tgz",
-      "integrity": "sha512-NK03gkkOz0CchHBMGomcNqa6U3jLNzHuWK9SI0+1FV475JA6cQxVtjlDcQoKKDNIQ3IwYumIlgoKYDEWUyFBwQ==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.1.1.tgz",
+      "integrity": "sha512-0bNXof9J3Qy0PeAoB6Nu0SBl6yOEZ4qnFVcicZULYBe4+6/s7ApVzF7SeLVBgLxtlgAoBSSGmR6P0ecnCoXrYA==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39",

web3.js/package.json

@@ -109,7 +109,7 @@
     "marked": "^0.6.0",
     "prettier": "^1.14.3",
     "rimraf": "2.6.3",
-    "rollup": "1.1.0",
+    "rollup": "1.1.1",
     "rollup-plugin-babel": "3.0.7",
     "rollup-plugin-commonjs": "9.2.0",
     "rollup-plugin-json": "^3.0.0",