mkarchiso: update memtest86+ license file location

The licenses package does not ship
`/usr/share/licenses/common/GPL2/license.txt` anymore, which results in:

    /usr/share/licenses/common/GPL2/license.txt': No such file or directory

Use its replacement, `/usr/share/licenses/spdx/GPL-2.0-only.txt` instead.

Fixes https://gitlab.archlinux.org/archlinux/archiso/-/issues/225

1 files changed, 2 insertions, 0 deletions

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 4c7a050..75cf2d2 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -20,6 +20,8 @@ Deprecated
 Fixed
 -----
 
+- Update the location where ``mkarchiso`` looks for the memtest86+ license file.
+
 Removed
 -------