Update install-sh from upstream

support/install-sh

@@ -1,14 +1,15 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2020-11-14.01; # UTC
+scriptversion=2023-11-23.18; # UTC
 
 #############################
 # NOTICE TO INN MAINTAINERS #
 #############################
 # This file has been modified from the standard libtool version by adding
 # code to handle .exe extensions, for Cygwin portability.
 # Search for the comment below containing "INN".
+#############################
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -131,9 +132,9 @@ it's up to you to specify -f if you want it.
 
 If -S is not specified, no backups are attempted.
 
-Email bug reports to [email protected].
-Automake home page: https://www.gnu.org/software/automake/
-"
+Report bugs to <[email protected]>.
+GNU Automake home page: <https://www.gnu.org/software/automake/>.
+General help using GNU software: <https://www.gnu.org/gethelp/>."
 
 while test $# -ne 0; do
   case $1 in