ci: Update Helm from 3.4.1 to 3.7.2

What does this MR do?

Updates Helm from 3.4.1 to 3.7.2 in some CI jobs. Only 3 jobs (lint, release development, and release beta) affect.

Why was this MR needed?

Helm 3.4 is obsolete.

What's the best way to test this MR?

Check lint release development jobs on this MR pipeline. release beta job can be confirmed on merge.

What are the relevant issue numbers?

Part of gitlab-org/gitlab-build-images#107 (closed)

Follows up !342 (merged)