⬆️ Bump rollup from 1.20.2 to 2.2.0

Bumps [rollup](https://github.com/rollup/rollup) from 1.20.2 to 2.2.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v1.20.2...v2.2.0)

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

package.json

@@ -31,7 +31,7 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
-    "rollup": "^1.20.2",
+    "rollup": "^2.2.0",
     "fs-extra": "^8.1.0"
   },
   "scripts": {

yarn.lock

@@ -2,16 +2,6 @@
 # yarn lockfile v1
 
 
-"@types/estree@0.0.39":
-  version "0.0.39"
-  resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.39.tgz#e177e699ee1b8c22d23174caaa7422644389509f"
-  integrity sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==
-
-"@types/node@^12.7.2":
-  version "12.7.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.7.2.tgz#c4e63af5e8823ce9cc3f0b34f7b998c2171f0c44"
-  integrity sha512-dyYO+f6ihZEtNPDcWNR1fkoTDf3zAK3lAABDze3mz6POyIercH0lEUawUFXlG8xaQZmm1yEBON/4TsYv/laDYg==
-
 acorn@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.0.0.tgz#26b8d1cd9a9b700350b71c0905546f64d1284e7a"
@@ -55,6 +45,11 @@ fs-extra@^8.1.0:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
+fsevents@~2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.2.tgz#4c0a1fb34bc68e543b4b82a9ec392bfbda840805"
+  integrity sha512-R4wDiBwZ0KzpgOWetKDug1FZcYhqYnUYKtfZYt4mD5SBz76q0KR4Q9o7GIPamsVPGmW3EYPPJ0dOOjvx32ldZA==
+
 get-func-name@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
@@ -77,14 +72,12 @@ pathval@^1.1.0:
   resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
   integrity sha1-uULm1L3mUwBe9rcTYd74cn0GReA=
 
-rollup@^1.20.2:
-  version "1.20.2"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.20.2.tgz#0e1be13cb5de244c9c463027092f7c93461558b9"
-  integrity sha512-pF4jFzNWMUuudIAeiTgOcSxn8XkBN2Y2/IwPR7iL/IZ8k9RwoLyp2QwNWiYT+HF537zwpmzZHTBYw345H9vq1A==
-  dependencies:
-    "@types/estree" "0.0.39"
-    "@types/node" "^12.7.2"
-    acorn "^7.0.0"
+rollup@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.2.0.tgz#d82cfd6eda6d9561593a7e8a2fc0b72811a89b49"
+  integrity sha512-iAu/j9/WJ0i+zT0sAMuQnsEbmOKzdQ4Yxu5rbPs9aUCyqveI1Kw3H4Fi9NWfCOpb8luEySD2lDyFWL9CrLE8iw==
+  optionalDependencies:
+    fsevents "~2.1.2"
 
 type-detect@^4.0.0, type-detect@^4.0.5:
   version "4.0.8"