Is your feature request related to a problem? Please describe.

The latest 0.x version of Axios should continue to receive updates for non-breaking security vulnerability resolutions. A ReDos vulnerability addressed in issue #6131 and resolved by PR #6132 could be applied to the 0.x branch.

More on the ReDos vulnerability: https://huntr.com/bounties/69a1aa07-c36e-4d9e-9325-b634e0aa4bb0

Describe the solution you'd like

The solution implemented by PR #6132 should be applied.

Describe alternatives you've considered

No response

Additional context/Screenshots

The following line would need to be updated:

https://github.com/axios/axios/blob/6acb5ef8ff127db65da85189b3ccaeb10b93121a/lib/helpers/combineURLs.js#L12