Update Borg installer

Version 1.4 introduces a new naming convention for fat binaries. It includes
the glibc version fo Linux.

glibc version 2.31 is compatible with Ubuntu 20.04 (2.31) and Ubuntu 22.04
(2.35).

https://www.borgbackup.org/releases/borg-1.4.html
borgbackup/borg#8263

programs/borgbackup/install.bash

@@ -16,7 +16,7 @@ jq
 
 browser_download_url=$(
   curl -Ss 'https://api.github.com/repos/borgbackup/borg/releases/latest' |
-  jq -r '.assets[] | select(.name | test("borg-linux64$")) | .browser_download_url'
+  jq -r '.assets[] | select(.name | test("^borg-linux-glibc231$")) | .browser_download_url'
 )
 
 download_filename=$(