Update gitlab-dangerfiles to 3.4.3

What does this MR do and why?

Related to #359052 (closed)

This MR makes it so that file names should no longer be doubled in danger bot comments.

I have tested it here.

Screenshots or screen recordings

These are strongly recommended to assist reviewers and reduce the time to merge your change.

How to set up and validate locally

1. Create an MR branching off of this branch
2. Update a file that falls into two or more review categories [example: lib/gitlab/tracking.rb. Full list of files and their review categories is here]
3. Check Dangerbot's comment: it should list the file only once, but still ask for all reviews required for given file [in given example: product intelligence and backend]

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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