Update dependency rollup to v2.26.4

Author: renovate-bot

package.json

@@ -44,7 +44,7 @@
     "npm-run-all": "4.1.5",
     "phantomjs-prebuilt": "2.1.16",
     "prettier": "2.0.5",
-    "rollup": "2.23.1",
+    "rollup": "2.26.4",
     "rollup-plugin-terser": "7.0.0",
     "should": "13.2.3",
     "ts-node": "8.10.2",

yarn.lock

@@ -4340,10 +4340,10 @@ rollup-plugin-terser@7.0.0:
     serialize-javascript "^4.0.0"
     terser "^5.0.0"
 
-rollup@2.23.1:
-  version "2.23.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.23.1.tgz#d458d28386dc7660c2e8a4978bea6f9494046c20"
-  integrity sha512-Heyl885+lyN/giQwxA8AYT2GY3U+gOlTqVLrMQYno8Z1X9lAOpfXPiKiZCyPc25e9BLJM3Zlh957dpTlO4pa8A==
+rollup@2.26.4:
+  version "2.26.4"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.26.4.tgz#a8350fd6bd56fce9873a7db2bd9547d40de3992b"
+  integrity sha512-6+qsGuP0MXGd7vlYmk72utm1MrgZj5GfXibGL+cRkKQ9+ZL/BnFThDl0D5bcl7AqlzMjAQXRAwZX1HVm22M/4Q==
   optionalDependencies:
     fsevents "~2.1.2"