Bump @rollup/plugin-commonjs from 19.0.2 to 20.0.0

Bumps [@rollup/plugin-commonjs](https://github.com/rollup/plugins/tree/HEAD/packages/commonjs) from 19.0.2 to 20.0.0.
- [Release notes](https://github.com/rollup/plugins/releases)
- [Changelog](https://github.com/rollup/plugins/blob/master/packages/commonjs/CHANGELOG.md)
- [Commits](https://github.com/rollup/plugins/commits/commonjs-v20.0.0/packages/commonjs)

---
updated-dependencies:
- dependency-name: "@rollup/plugin-commonjs"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -37,7 +37,7 @@
         "@babel/preset-flow": "^7.8.3",
         "@babel/register": "^7.8.3",
         "@rollup/plugin-babel": "^5.0.3",
-        "@rollup/plugin-commonjs": "^19.0.0",
+        "@rollup/plugin-commonjs": "^20.0.0",
         "@rollup/plugin-json": "^4.0.3",
         "@rollup/plugin-node-resolve": "^13.0.0",
         "adler-32": "^1.2.0",

yarn.lock

@@ -1315,10 +1315,10 @@
     "@babel/helper-module-imports" "^7.10.4"
     "@rollup/pluginutils" "^3.1.0"
 
-"@rollup/plugin-commonjs@^19.0.0":
-  version "19.0.2"
-  resolved "https://registry.yarnpkg.com/@rollup/plugin-commonjs/-/plugin-commonjs-19.0.2.tgz#1ccc3d63878d1bc9846f8969f09dd3b3e4ecc244"
-  integrity sha512-gBjarfqlC7qs0AutpRW/hrFNm+cd2/QKxhwyFa+srbg1oX7rDsEU3l+W7LAUhsAp9mPJMAkXDhLbQaVwEaE8bA==
+"@rollup/plugin-commonjs@^20.0.0":
+  version "20.0.0"
+  resolved "https://registry.yarnpkg.com/@rollup/plugin-commonjs/-/plugin-commonjs-20.0.0.tgz#3246872dcbcb18a54aaa6277a8c7d7f1b155b745"
+  integrity sha512-5K0g5W2Ol8hAcTHqcTBHiA7M58tfmYi1o9KxeJuuRNpGaTa5iLjcyemBitCBcKXaHamOBBEH2dGom6v6Unmqjg==
   dependencies:
     "@rollup/pluginutils" "^3.1.0"
     commondir "^1.0.1"