CI: use latest LTS kernel in tests

Signed-off-by: Florian Lehner <[email protected]>

Author: florianl

.github/workflows/unit-test-on-pull-request.yml

@@ -137,11 +137,13 @@ jobs:
           - { target_arch: amd64, kernel: 6.6.31 }
           - { target_arch: amd64, kernel: 6.8.10 }
           - { target_arch: amd64, kernel: 6.9.1 }
+          - { target_arch: amd64, kernel: 6.12.16 }
 
           # ARM64 (NOTE: older ARM64 kernels are not available in Cilium repos)
           - { target_arch: arm64, kernel: 6.6.31 }
           - { target_arch: arm64, kernel: 6.8.4 }
           - { target_arch: arm64, kernel: 6.9.1 }
+          - { target_arch: arm64, kernel: 6.12.16 }
     steps:
       - name: Clone code
         uses: actions/checkout@v4