main/postmarketos-base: fix dependency loop

We don't need to have makedepends="postmarketos-initramfs" for building
postmarketos-base. I'm not sure why this was added in
6c799ac4f6.

Removing it fixes this dependency loop we currently see in BPO while
bootstrapping v26.06:

* postmarketos-initramfs-3.11.0-r0 (missing depends: postmarketos-base)
* postmarketos-base-61-r1 (missing depends: postmarketos-initramfs)

Signed-off-by: Oliver Smith <ollieparanoid@postmarketos.org>
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/8643>

main/postmarketos-base/APKBUILD

@@ -2,12 +2,11 @@
 maintainer="Clayton Craft <clayton@craftyguy.net>"
 pkgname=postmarketos-base
 pkgver=61
-pkgrel=0
+pkgrel=1
 pkgdesc="Meta package for minimal postmarketOS base"
 url="https://postmarketos.org"
 arch="noarch"
 license="GPL-3.0-or-later"
-makedepends="postmarketos-initramfs"
 # Several of these dependencies come from alpine - base, as the upstream
 # recommendation to not depend on openrc has been to copy them here:
 # https: // gitlab.alpinelinux.org/alpine/aports/-/merge_requests/71686#note_435428