Release cross-toolchain-base version 66+apertis7

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

debian/changelog

+cross-toolchain-base (66+apertis7) apertis; urgency=medium
+
+  * Bump linux-source dependency to 6.9.12
+
+ -- Dylan Aïssi <dylan.aissi@collabora.com>  Mon, 29 Jul 2024 13:49:35 +0200
+
 cross-toolchain-base (66+apertis6) apertis; urgency=medium
 
   * Bump linux-source dependency to 6.8.12