Update browser gem to 5.3.1

What does this MR do and why?

This is to support the Ruby 3 migration since only newer versions of this gem have a Ruby 3 build.

• https://github.com/fnando/browser/blob/main/CHANGELOG.md
• https://my.diffend.io/gems/browser/4.2.0/5.3.1

One breaking change I found is that the IDs for unknown browsers and platforms has changed. I therefore map these to the values expected by us now.

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How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #378866 (closed)