Make scripts executable

While they are not designed to be executed directly, making them
executable simplifies their usage.

Link: https://lore.kernel.org/r/18464ce5093946667fa7cba8df9d50b327bb91a2.1740726978.git.u.kleine-koenig@baylibre.com
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
diff --git a/scripts/korg-refresh-keys b/scripts/korg-refresh-keys
old mode 100644
new mode 100755
diff --git a/scripts/korg-update-pgpkeys b/scripts/korg-update-pgpkeys
old mode 100644
new mode 100755