system/s6-rc: upgrade to 0.5.4.0

system/s6-rc/APKBUILD

 # Contributor: Laurent Bercot <ska-adelie@skarnet.org>
 # Maintainer: Laurent Bercot <ska-adelie@skarnet.org>
 pkgname=s6-rc
-pkgver=0.5.3.3
+pkgver=0.5.4.0
 pkgrel=0
 pkgdesc="skarnet.org's service manager, working on top of s6"
 url="https://skarnet.org/software/s6-rc/"
@@ -66,4 +66,4 @@ doc() {
         cp -a "$builddir/doc" "$subpkgdir/usr/share/doc/$pkgname"
 }
 
-sha512sums="9ff86c1490c3ccb904126ad745a45628104880e04f3e95e2d899c8e5cc951d52f38885e85a4edc1f6962a741ca229aba6bf7878b1ef193efe2f307eeda8f262b  s6-rc-0.5.3.3.tar.gz"
+sha512sums="04e5fb73fca713f2dd01113fa70fc9a0f1d4bb600c7cbb0cbd6133a5d6641c07ce8774ce07f78854de5baae5be93b106f38a0687a07fff5e62744261a4d4ea70  s6-rc-0.5.4.0.tar.gz"