ci: Use Helm 3.5 and kubectl 1.17 on review clean job

What does this MR do and why?

Uses Helm 3.5 (instead of 3.1) and kubectl 1.17 (instead of 1.14) on review-cleanup job who is in charge of shutting down Review App deployments.

Replaces !57924 (closed)

Follows up !62444 (merged)

MR acceptance checklist

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

Related to #326401 (closed)