chore(package): update lockfile yarn.lock

Author: greenkeeper[bot]

yarn.lock

@@ -708,6 +708,11 @@ acorn@^6.0.1, acorn@^6.0.2:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.4.tgz#77377e7353b72ec5104550aa2d2097a2fd40b754"
   integrity sha512-VY4i5EKSKkofY2I+6QLTbTTN/UvEQPCo6eiwzzSaSWfpaDhOmStMCMod6wmuPciNq+XS0faCglFu2lHZpdHUtg==
 
+acorn@^6.0.5:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.5.tgz#81730c0815f3f3b34d8efa95cb7430965f4d887a"
+  integrity sha512-i33Zgp3XWtmZBMNvCr4azvOFeWVw1Rk6p3hfi3LUDvIFraOMywb1kAtrbi+med14m4Xfpqm3zRZMT+c0FNE7kg==
+
 ajv@^6.5.5:
   version "6.5.5"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.5.tgz#cf97cdade71c6399a92c6d6c4177381291b781a1"
@@ -4530,13 +4535,14 @@ rollup-watch@^4.3.1:
     require-relative "0.8.7"
     rollup-pluginutils "^2.0.1"
 
-rollup@^0.67.0:
-  version "0.67.3"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.67.3.tgz#55475b1b62c43220c3b4bd7edc5846233932f50b"
-  integrity sha512-TyNQCz97rKuVVbsKUTXfwIjV7UljWyTVd7cTMuE+aqlQ7WJslkYF5QaYGjMLR2BlQtUOO5CAxSVnpQ55iYp5jg==
+rollup@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.1.0.tgz#461a7534b55be48aa4a6e6810a1543a5769e75d1"
+  integrity sha512-NK03gkkOz0CchHBMGomcNqa6U3jLNzHuWK9SI0+1FV475JA6cQxVtjlDcQoKKDNIQ3IwYumIlgoKYDEWUyFBwQ==
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"
+    acorn "^6.0.5"
 
 rst-selector-parser@^2.2.3:
   version "2.2.3"