Bump rollup from 0.66.4 to 0.66.6

Bumps [rollup](https://github.com/rollup/rollup) from 0.66.4 to 0.66.6.
- [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/v0.66.4...v0.66.6)

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

package-lock.json

@@ -9,9 +9,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "10.11.4",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.11.4.tgz",
-      "integrity": "sha512-ojnbBiKkZFYRfQpmtnnWTMw+rzGp/JiystjluW9jgN3VzRwilXddJ6aGQ9V/7iuDG06SBgn7ozW9k3zcAnYjYQ==",
+      "version": "10.12.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.1.tgz",
+      "integrity": "sha512-i1sl+WCX2OCHeUi9oi7PiCNUtYFrpWhpcx878vpeq/tlZTKzcFdHePlyFHVbWqeuKN0SRPl/9ZFDSTsfv9h7VQ==",
       "dev": true
     },
     "arr-diff": {
@@ -342,13 +342,13 @@
       "dev": true
     },
     "rollup": {
-      "version": "0.66.4",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.66.4.tgz",
-      "integrity": "sha512-oV6dzR2zDYVOMUmrM1XMTW0NlZqKeZANAWH+A7BwCfE+mAfJ6xRkYbrM3qAossgyMxPN9aFBu8kRXf5HYB5gvw==",
+      "version": "0.66.6",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.66.6.tgz",
+      "integrity": "sha512-J7/SWanrcb83vfIHqa8+aVVGzy457GcjA6GVZEnD0x2u4OnOd0Q1pCrEoNe8yLwM6z6LZP02zBT2uW0yh5TqOw==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "10.11.4"
+        "@types/node": "10.12.1"
       }
     },
     "rollup-plugin-svelte": {

package.json

@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "rollup": "^0.66.4",
+    "rollup": "^0.66.6",
     "rollup-plugin-svelte": "^4.3.2",
     "svelte": "^2.15.0"
   }