Bump rollup from 1.27.5 to 1.27.8

Bumps [rollup](https://github.com/rollup/rollup) from 1.27.5 to 1.27.8.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v1.27.5...v1.27.8)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -24,7 +24,7 @@
     "cross-env": "^5.2.0",
     "flow-bin": "^0.89.0",
     "mocha": "^6.2.2",
-    "rollup": "^1.27.5",
+    "rollup": "^1.27.8",
     "rollup-plugin-node-resolve": "^4.2.4",
     "rollup-plugin-typescript2": "^0.18.1",
     "sinon": "^7.5.0",

yarn.lock

@@ -1757,10 +1757,10 @@ [email protected]:
     estree-walker "^0.5.2"
     micromatch "^2.3.11"
 
-rollup@^1.27.5:
-  version "1.27.5"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.27.5.tgz#d100fb0ffd8353575cb2057152547b9abfddfe59"
-  integrity sha512-8rfVdzuTg2kt8ObD9LNJpEwUN7B6lsl3sHc5fddtgICpLjpYeSf4m2+RftBzcCaBTMi1iYX3Ez8zFT4Gj2nJjg==
+rollup@^1.27.8:
+  version "1.27.8"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.27.8.tgz#94288a957af9f4c2380b73a17494d87705997d0f"
+  integrity sha512-EVoEV5rAWl+5clnGznt1KY8PeVkzVQh/R0d2s3gHEkN7gfoyC4JmvIVuCtPbYE8NM5Ep/g+nAmvKXBjzaqTsHA==
   dependencies:
     "@types/estree" "*"
     "@types/node" "*"