cross/busybox-static-*: upgrade to 1.31.1-r15

upstream commit https://gitlab.alpinelinux.org/alpine/aports/-/commit/38e72c7bec31c9038ade5553b2ee2bc7c81bc665

cross/busybox-static-aarch64/APKBUILD

@@ -3,7 +3,7 @@
 
 pkgname=busybox-static-aarch64
 pkgver=1.31.1
-pkgrel=14
+pkgrel=15
 
 _arch="aarch64"
 _mirror="http://dl-cdn.alpinelinux.org/alpine/"
@@ -26,4 +26,4 @@ package() {
     rm .PKGINFO .SIGN.*
 }
 
-sha512sums="d8b821b9f03837fde107cd6b4260b339c57c532d0c643d4bdf142c2cc33248029023238240a863117deed1ea3cb4531f51cbad0de4767f44801ce18cef4b3475  busybox-static-1.31.1-r14-aarch64.apk"
+sha512sums="9fd9c92bcff520bc22cf4cd772bdef05f742ad1aacd87a795e28856258274dede593d6ca364e3cfb94459051961bfed26518771ce1fedbe14ecccb905a963544  busybox-static-1.31.1-r15-aarch64.apk"

cross/busybox-static-armhf/APKBUILD

@@ -3,7 +3,7 @@
 
 pkgname=busybox-static-armhf
 pkgver=1.31.1
-pkgrel=14
+pkgrel=15
 
 _arch="armhf"
 _mirror="http://dl-cdn.alpinelinux.org/alpine/"
@@ -26,4 +26,4 @@ package() {
     rm .PKGINFO .SIGN.*
 }
 
-sha512sums="ceeb5786a2ca8a904dece9b9b3132e883c03eeb216b9343def3faa2a0d64a4744ee359f991730c531859ed7e82baa88a9f95349265735ac6e1c539f28adf668e  busybox-static-1.31.1-r14-armhf.apk"
+sha512sums="118b7b85611cd96be0917a59988a7a39499d0152c7df1100bc388cf36d04177598c2a71f662663532139836824bfeac38549ed0d95d2bc196c49dfbd99d5ee7b  busybox-static-1.31.1-r15-armhf.apk"

cross/busybox-static-armv7/APKBUILD

@@ -3,7 +3,7 @@
 
 pkgname=busybox-static-armv7
 pkgver=1.31.1
-pkgrel=14
+pkgrel=15
 
 _arch="armv7"
 _mirror="http://dl-cdn.alpinelinux.org/alpine/"
@@ -26,4 +26,4 @@ package() {
     rm .PKGINFO .SIGN.*
 }
 
-sha512sums="7c5053f6eb683917708b36fc255630386e9b6e6deb265ee44bdcb7fdd272a54a0b9d0d589355f454bacdd6be75ebe5eeec9e0650d90e403c81c080204d422a59  busybox-static-1.31.1-r14-armv7.apk"
+sha512sums="f220ff421296c961433dff062bd11f150a9b10bd28b3fc4984d30c328d03e56e99a16944a03e861b23c77f72b7beb42832a77160a3e74db08d5389d28a9da002  busybox-static-1.31.1-r15-armv7.apk"