Bump size-limit from 0.21.1 to 1.3.7 (#112)

Bumps [size-limit](https://github.com/ai/size-limit) from 0.21.1 to 1.3.7.
- [Release notes](https://github.com/ai/size-limit/releases)
- [Changelog](https://github.com/ai/size-limit/blob/master/CHANGELOG.md)
- [Commits](ai/size-limit@0.21.1...1.3.7)

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

package.json

@@ -123,7 +123,7 @@
     "rollup-plugin-size-snapshot": "^0.9.0",
     "rollup-plugin-terser": "^5.1.1",
     "sinon": "^7.0.0",
-    "size-limit": "^0.21.0",
+    "size-limit": "^1.3.7",
     "tslint": "5.14.0",
     "typescript": "3.2.4",
     "vrtest": "^0.2.0",