cross/grub-efi-x86: upgrade to 2.06-r13

cross/grub-efi-x86/APKBUILD

@@ -3,7 +3,7 @@
 
 pkgname=grub-efi-x86
 pkgver=2.06
-pkgrel=12
+pkgrel=13
 
 _arch="x86"
 _mirror="http://dl-4.alpinelinux.org/alpine/"
@@ -22,5 +22,5 @@ package() {
 }
 
 sha512sums="
-c1e228c537a0d2372ac27617022b4512b685a485e5e284d8b951b6b9c01babb6dddc6ad1d38a42596db5e1f2065bc3f669cf5e375fd6286712fe30f74bd36ca6  grub-efi-2.06-r12-x86-edge.apk
+9a91687dbd2127c216c280953204406f49efce954bf34b9f3f25d8418aed7ade9ef0daf9729a6f7fa56dff24ccf6eb45ea19a2b014b7a1f8163f870604efb180  grub-efi-2.06-r13-x86-edge.apk
 "