Drop Alpine Version 3.18

Axel von Bertoldirequested to merge
avonbertoldi/drop-alpine-3.18 into main

Drop all references to version 3.18 of alpine in both runner and helper images. Historical documentation about alpine version support is retained though.

Closes Drop alpine 3.18 (#38955 - closed)

Edited by Axel von Bertoldi

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