This solves the issue where a release name composed out of e.g.
the target namespace and name of the HelmRelease itself would exceed
the >=53 character length. By calculating the SHA256 checksum of the
release name, taking the first 12 characters of this checksum and
appending it to the release named trimmed to 40 characters separated
by a hyphen (`<long-release-name>-abcdef12345678`).
Signed-off-by: Hidde Beydals <hello@hidde.co>