bump 6.6.y and 6.12.y kernel versions

`rpi-6.6.y` went from `6.6.67` to `6.6.74`.
`rpi-6.12.y` went from `6.12.11` to `6.12.17`

Author: JamieMagee

flake.lock

@@ -7,11 +7,11 @@
       flake = false;
       url = "github:raspberrypi/linux/stable_20241008";
     };
-    rpi-linux-6_6_67-src = {
+    rpi-linux-6_6_78-src = {
       flake = false;
       url = "github:raspberrypi/linux/rpi-6.6.y";
     };
-    rpi-linux-6_12_11-src = {
+    rpi-linux-6_12_17-src = {
       flake = false;
       url = "github:raspberrypi/linux/rpi-6.12.y";
     };

flake.nix

@@ -1,6 +1,6 @@
 { rpi-linux-stable-src
-, rpi-linux-6_6_67-src
-, rpi-linux-6_12_11-src
+, rpi-linux-6_6_78-src
+, rpi-linux-6_12_17-src
 , rpi-firmware-src
 , rpi-firmware-nonfree-src
 , rpi-bluez-firmware-src
@@ -10,9 +10,9 @@ final: prev:
 let
   versions = {
     v6_6_51.src = rpi-linux-stable-src;
-    v6_6_67.src = rpi-linux-6_6_67-src;
-    v6_12_11 = {
-      src = rpi-linux-6_12_11-src;
+    v6_6_78.src = rpi-linux-6_6_78-src;
+    v6_12_17 = {
+      src = rpi-linux-6_12_17-src;
       patches = [
         {
           name = "remove-readme-target.patch";
@@ -114,7 +114,7 @@ in
   # rpi kernels and firmware are available at
   # `pkgs.rpi-kernels.<VERSION>.<BOARD>'. 
   #
-  # For example: `pkgs.rpi-kernels.v6_6_67.bcm2712'
+  # For example: `pkgs.rpi-kernels.v6_6_78.bcm2712'
   rpi-kernels = rpi-kernels (
     final.lib.cartesianProduct
       { board = boards; version = (builtins.attrNames versions); }