feat: update GTS kernel pin to 6.12.9 (#2170)

Co-authored-by: m2 <[email protected]>

.github/workflows/build-image-gts.yml

@@ -6,8 +6,8 @@ on:
       - testing
     paths-ignore:
       - "**.md"
-  # schedule:
-  #   - cron: "50 5 * * 0" # 5:50 UTC Weekly on Sundays
+  schedule:
+    - cron: "50 5 * * 0" # 5:50 UTC Weekly on Sundays
   workflow_dispatch:
   workflow_call:
 
@@ -21,7 +21,7 @@ jobs:
       matrix:
         brand_name: [bluefin]
     with:
-      kernel_pin: 6.11.8-200.fc40.x86_64     ## This is where kernels get pinned.
+      kernel_pin: 6.12.9-100.fc40.x86_64     ## This is where kernels get pinned.
       brand_name: ${{ matrix.brand_name }}
       stream_name: gts
 

Justfile

@@ -131,11 +131,8 @@ build $image="bluefin" $tag="latest" $flavor="main" rechunk="0" ghcr="0" pipelin
     # AKMODS Flavor and Kernel Version
     if [[ "${flavor}" =~ hwe ]]; then
         akmods_flavor="bazzite"
-    elif [[ "${tag}" =~ gts ]]; then
+    elif [[ "${tag}" =~ gts|stable ]]; then
         akmods_flavor="coreos-stable"
-    elif [[ "${tag}" =~ stable ]]; then
-        # TODO: revert this to "coreos-stable" once 6.12.9 kernel is released for coreos-stable images
-        akmods_flavor="coreos-testing"
     elif [[ "${tag}" =~ beta ]]; then
         akmods_flavor="coreos-testing"
     else