lang: core: embedded: provisioner: Workaround bad mirrors

With the release of Fedora 41, I was getting lots of mirror errors.
Hopefully this helps make it more robust. It was failing repeatedly
while trying to download packages, and I kept having to restart things,
but once I added this option things worked. Hopefully they're related.

lang/core/embedded/provisioner/files/kickstart.ks.tmpl

@@ -100,7 +100,7 @@ repo --name="{{ $name }}" --baseurl="{{ $baseurl }}"
 #
 #	packages
 #
-%packages --retries 3 # handle spurious failures
+%packages --timeout 60 --retries 3 # handle spurious failures
 @core
 @standard
 @hardware-support