linux_6_6: 6.6.77 -> 6.6.78

pkgs/os-specific/linux/kernel/kernels-org.json

···
         "hash": "sha256:0mm4q8f6kbqddy4zaxjf5xyqpnla5qprvsf7v3vq01gmlzr3rivc"
     },
     "6.6": {
-        "version": "6.6.77",
-        "hash": "sha256:0km855dnimg1clilnpcz293bd2gpbycvn3llm9kyynhjrzgqj408"
+        "version": "6.6.78",
+        "hash": "sha256:1vckmam50nw8gms1wj18p5mv7rkpl849k3q587bkl4smsndrm8ss"
     },
     "6.11": {
         "version": "6.11.11",