main/postmarketos-mkinitfs: upgrade to 2.2.2 (MR 4475)

The only new thing in this version is the addition of a deprecation warning
when osk-sdl is installed in the initramfs.

Also see: https://gitlab.com/postmarketOS/pmaports/-/issues/2319
[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=2.2.1
-pkgrel=2
+pkgver=2.2.2
+pkgrel=0
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://postmarketos.org"
 depends="
@@ -50,6 +50,6 @@ check() {
 }
 
 sha512sums="
-67a80c3bded6f92ac1c1ac2a0db00b06d9c6799bb7858692b634ee57e860fe871e5bfd7b3d14eaf179c206b36eec7adb69fd252931992ae75348a4c12210d252  postmarketos-mkinitfs-2.2.1.tar.gz
-d9e3011d5a6af182c7e79ae6a5dca8abe3590b0132410a09f681fdefd8621ecfe6d0d795772f09a998a444ce8cb9a1f1792ea64fe75db3dbbaf641076249d4e5  mkinitfs-vendor-2.2.1.tar.gz
+ddbb21c1beaaaad7fe9bb653ab6013a0d5b041a2e261e1f02ae7fbf716d1a8f8bf3043904707a35a4fe484aba578f0fba860d269a946541a345b647a83cde7d9  postmarketos-mkinitfs-2.2.2.tar.gz
+34ecfb29d3b0e547ba3ba3e50fa0e962c3c381cc200b12504354a9cfcc46a1b2987a69f298eedb5c39a6cdb06bc270119c991ffe1f96399e37ec8c20e90385f4  mkinitfs-vendor-2.2.2.tar.gz
 "