keycodemapdb: Update submodule

We need commit 6280c94f306d in order to fix our generated
man pages.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>

diff --git a/src/keycodemapdb b/src/keycodemapdb
index 16e5b0787687d8904dad2c026107409eb9bfcb95..6280c94f306df6a20bbc100ba15a5a81af0366e6 160000 (submodule)
--- a/src/keycodemapdb
+++ b/src/keycodemapdb
@@ -1 +1 @@
-Subproject commit 16e5b0787687d8904dad2c026107409eb9bfcb95
+Subproject commit 6280c94f306df6a20bbc100ba15a5a81af0366e6