v1.13.1

This is a bugfix release.

What's Changed

• Update update-ldcache hook to only update ldcache if it exists.
• Update update-ldcache hook to create /etc/ld.so.conf.d folder if it doesn't exist.
• Fix failure when libcuda cannot be located during XOrg library discovery.
• Fix CDI spec generation on systems that use /etc/alternatives (e.g. Debian)

Full Changelog: v1.13.0...v1.13.1