xpra: rebuild for Python 3.10, update to 4.2.3.

srcpkgs/xpra/template

@@ -1,6 +1,6 @@
 # Template file for 'xpra'
 pkgname=xpra
-version=4.2.2
+version=4.2.3
 revision=1
 build_style=python3-module
 make_install_args="$(vopt_with docs)"
@@ -17,7 +17,7 @@ license="GPL-2.0-or-later"
 homepage="https://xpra.org/"
 changelog="https://raw.githubusercontent.com/Xpra-org/xpra/master/docs/CHANGELOG.md"
 distfiles="https://github.com/Xpra-org/xpra/archive/v${version}.tar.gz"
-checksum=e1928b5ac2d25c7cad8ad8965b507552097d45fea30b7d0e9f6eb14da4d78bac
+checksum=69759c716d0dd50dba7c816f8a4c4afdfee4553d1aa8bd5104874e95a4ffd207
 conf_files="/etc/xpra/xpra.conf /etc/xpra/xorg.conf /etc/xpra/conf.d/*"
 
 system_groups="xpra"