chore(linter): Ignore Changelog files (#1428) [skip ci]

I noticed that the changelog file that gets created automatically during
releases has been making packages fail the linter. We should ignore
these auto-generated files.

See this commit for an example of what the linter autocorrected:
41a539c#diff-e76234a2ccf81f527051b0406a6719fa8e9b1687a2e46ae031556fee65199b3d

And [this CircleCI
result](https://app.circleci.com/pipelines/github/infinitered/reactotron/2231/workflows/b3a4e492-be6a-4cd7-99d1-6a6c2d14857c/jobs/2872)
for an example of the failure.

Author: markrickert

.eslintrc.js

@@ -55,5 +55,6 @@ module.exports = {
     "**/build/**/*",
     "examples",
     "scripts",
+    "**/CHANGELOG.md",
   ],
 };