proot: Update for renameat2 and libaudit fixes

Fixes termux/proot#21
Fixes termux/proot#25

packages/proot/build.sh

@@ -1,11 +1,11 @@
 TERMUX_PKG_HOMEPAGE=https://proot-me.github.io/
 TERMUX_PKG_DESCRIPTION="Emulate chroot, bind mount and binfmt_misc for non-root users"
 # Just bump commit and version when needed:
-_COMMIT=3bc06868508b858e9dc290e29815ecd690e9cb0c
+_COMMIT=b4afbd31d93ab7050303bdd749a97f65709439eb
 TERMUX_PKG_VERSION=5.1.107
-TERMUX_PKG_REVISION=12
+TERMUX_PKG_REVISION=13
 TERMUX_PKG_SRCURL=https://github.com/termux/proot/archive/${_COMMIT}.zip
-TERMUX_PKG_SHA256=6214cc47d468c04503fd004a2c44f77986ad110857446525087389524e32b86e
+TERMUX_PKG_SHA256=46587d33ecebb08bccc077f1a9336de84579d3f2e8a6a923814060fd7c06013c
 TERMUX_PKG_DEPENDS="libtalloc"
 
 termux_step_pre_configure() {