main/postmarketos-mkinitfs: upgrade to 2.3.1 (MR 4763)

[ci:skip-build] already built successfully in CI

main/postmarketos-mkinitfs/APKBUILD

 # Maintainer: Oliver Smith <ollieparanoid@postmarketos.org>
 # Co-Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-mkinitfs
-pkgver=2.2.2
-pkgrel=3
+pkgver=2.3.1
+pkgrel=0
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://postmarketos.org"
 depends="
@@ -60,6 +60,6 @@ check() {
 }
 
 sha512sums="
-ddbb21c1beaaaad7fe9bb653ab6013a0d5b041a2e261e1f02ae7fbf716d1a8f8bf3043904707a35a4fe484aba578f0fba860d269a946541a345b647a83cde7d9  postmarketos-mkinitfs-2.2.2.tar.gz
-34ecfb29d3b0e547ba3ba3e50fa0e962c3c381cc200b12504354a9cfcc46a1b2987a69f298eedb5c39a6cdb06bc270119c991ffe1f96399e37ec8c20e90385f4  mkinitfs-vendor-2.2.2.tar.gz
+76b447eb05bfed465f9c0f42d851a55249a5854c4b34c520c4bedef2d2916d1ffcac0b3273b916edacfa6397320ea1f52f4dab47a09ab385e6702c062985f8b1  postmarketos-mkinitfs-2.3.1.tar.gz
+61572a14ba1c06cdff6ae80b8e4a70f332d016a73b84afaca085dcc5a5c0fe19cf70d42a6595f6d11d8928b41eb680e14e579c20e3839dd47766105f46a90e7d  mkinitfs-vendor-2.3.1.tar.gz
 "