RangeError: Maximum call stack size exceeded (problematic regexp for long in line source maps)

We work on a large application, and next.js transitively uses this package for inline source maps.

The regexp used to detect the contents of the source maps starts to choke on inline source maps created for Emscripten-generated loader Javascript.

```
RangeError: Maximum call stack size exceeded
at RegExp.exec ()
at retrieveSourceMapURL (C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:340:21)
at Array. (C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:353:26)
at C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:199:32
at mapSourcePosition (C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:383:21)
at wrapCallSite (C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:592:20)
at Function.prepareStackTrace (C:\Users\bberman\Documents\appmana\node_modules\@cspotcode\source-map-support\source-map-support.js:671:41)
at maybeOverridePrepareStackTrace (node:internal/errors:142:29)
at prepareStackTrace (node:internal/errors:116:5)
at getStackString (node:internal/util/inspect:1240:16)
at formatError (node:internal/util/inspect:1369:15)
at formatRaw (node:internal/util/inspect:985:14)
at formatValue (node:internal/util/inspect:840:10)
at inspect (node:internal/util/inspect:364:10)
at formatWithOptionsInternal (node:internal/util/inspect:2298:40)
```

This is actually a very painful error. I am hoping you can deal with the data URI-style values on the right hand side of the source map marker potentially without using a regular expression to find the right hand side.