systemd-boot: bump version to 246.2

The recipe includes systemd.inc and so shares SRCREV with the main systemd.

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-core/systemd/systemd-boot_246.1.bb b/meta/recipes-core/systemd/systemd-boot_246.2.bb
similarity index 100%
rename from meta/recipes-core/systemd/systemd-boot_246.1.bb
rename to meta/recipes-core/systemd/systemd-boot_246.2.bb