chore(deps): update dependency rollup to v2 (#156)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

package-lock.json

@@ -4368,12 +4368,6 @@
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       "dev": true
     },
-    "@types/estree": {
-      "version": "0.0.44",
-      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.44.tgz",
-      "integrity": "sha512-iaIVzr+w2ZJ5HkidlZ3EJM8VTZb2MJLCjw3V+505yVts0gRC4UMvjw0d1HPtGqI/HQC/KdsYtayfzl+AXY2R8g==",
-      "dev": true
-    },
     "@types/istanbul-lib-coverage": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz",
@@ -15471,21 +15465,20 @@
       }
     },
     "rollup": {
-      "version": "1.32.1",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.32.1.tgz",
-      "integrity": "sha512-/2HA0Ec70TvQnXdzynFffkjA6XN+1e2pEv/uKS5Ulca40g2L7KuOE3riasHoNVHOsFD5KKZgDsMk1CP3Tw9s+A==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.2.0.tgz",
+      "integrity": "sha512-iAu/j9/WJ0i+zT0sAMuQnsEbmOKzdQ4Yxu5rbPs9aUCyqveI1Kw3H4Fi9NWfCOpb8luEySD2lDyFWL9CrLE8iw==",
       "dev": true,
       "requires": {
-        "@types/estree": "*",
-        "@types/node": "*",
-        "acorn": "^7.1.0"
+        "fsevents": "~2.1.2"
       },
       "dependencies": {
-        "acorn": {
-          "version": "7.1.1",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
-          "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
-          "dev": true
+        "fsevents": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.1.2.tgz",
+          "integrity": "sha512-R4wDiBwZ0KzpgOWetKDug1FZcYhqYnUYKtfZYt4mD5SBz76q0KR4Q9o7GIPamsVPGmW3EYPPJ0dOOjvx32ldZA==",
+          "dev": true,
+          "optional": true
         }
       }
     },

package.json

@@ -80,7 +80,7 @@
     "react-dom": "16.13.1",
     "react-markdown": "4.3.1",
     "rimraf": "2.7.1",
-    "rollup": "1.32.1",
+    "rollup": "2.2.0",
     "rollup-plugin-babel": "4.4.0",
     "rollup-plugin-commonjs": "9.3.4",
     "rollup-plugin-node-resolve": "4.2.4",