Copy for code climate report in merge request widget

Change the copy of the positive code climate report in the MR widget from "No changes to code quality so far" to "No changes to code quality"

"so far" is unnecessary and sounds condescending

added 19173 gitlab-ce2024201 labels

changed milestone to gitlab-ce%29

changed milestone to gitlab-ce%42

assigned to @filipa

mentioned in merge request !2493 (merged)

closed via merge request !2493 (merged)

mentioned in commit a727a136