chore(deps): update dependency rollup-plugin-commonjs to v9.1.8 (#447)

Author: renovate[bot]

package.json

@@ -56,7 +56,7 @@
     "rimraf": "2.6.2",
     "rollup": "0.65.2",
     "rollup-plugin-babel": "4.0.0-beta.8",
-    "rollup-plugin-commonjs": "9.1.6",
+    "rollup-plugin-commonjs": "9.1.8",
     "rollup-plugin-node-resolve": "3.4.0",
     "rollup-plugin-replace": "2.0.0",
     "rollup-plugin-terser": "2.0.2",

yarn.lock

@@ -5172,9 +5172,9 @@ [email protected]:
     "@babel/helper-module-imports" "7.0.0-beta.56"
     rollup-pluginutils "^2.3.0"
 
-[email protected].6:
-  version "9.1.6"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-commonjs/-/rollup-plugin-commonjs-9.1.6.tgz#ad553813c922b71467152794b98f2fd0f195b8a5"
+[email protected].8:
+  version "9.1.8"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-commonjs/-/rollup-plugin-commonjs-9.1.8.tgz#4113ed94e6054b5f8a3501d8811f934cadde3246"
   dependencies:
     estree-walker "^0.5.1"
     magic-string "^0.22.4"