main/postmarketos-base: Add alpine-release to replaces (MR 3372)
Upstream changed the alpine-base package. Conflicting files are now in alpine-release instead of alpine-base resulting in this error:
(110/140) Installing postmarketos-base (21-r0)
ERROR: postmarketos-base-21-r0: trying to overwrite etc/issue owned by alpine-release-3.17_alpha20220809-r1.
ERROR: postmarketos-base-21-r0: trying to overwrite etc/os-release owned by alpine-release-3.17_alpha20220809-r1.