Describe the bug

Could be same as #664...

The code here:

const options = babel.loadOptions ? babel.loadOptions({ filename }) : { plugins: [] }

...assumes, as per babel documentation:

...resulting in an options object where:

opts.plugins is a full list of Plugin instances.

However, if a file is ignored, the options are returned as null and the attempt to spread options.plugins:

plugins: [...extraPlugins, ...options.plugins]

... causes a failure:

Error:  TypeError: [BABEL]: Cannot read properties of null (reading 'plugins')

Perhaps we can alter the ternary to be:

const options = babel.loadOptions?.({ filename: filename }) ?? { plugins: [] };

See #804 that last touched this.

To Reproduce
Steps to reproduce the behavior:

1. Set an ignored file in .babelignore or ignore in config
2. Run danger

Expected behavior

File is ignored for babel transpilation, danger processes it without issue.

Your Environment