linux: 5.4.247 -> 5.4.248

(cherry picked from commit bf2aa164604966cc2c22bf607c5e224dfb2dda7a)

pkgs/os-specific/linux/kernel/linux-5.4.nix

···
 with lib;
 
 buildLinux (args // rec {
-  version = "5.4.247";
+  version = "5.4.248";
 
   # modDirVersion needs to be x.y.z, will automatically add .0 if needed
   modDirVersion = if (modDirVersionArg == null) then concatStringsSep "." (take 3 (splitVersion "${version}.0")) else modDirVersionArg;
···
 
   src = fetchurl {
     url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
-    sha256 = "1mzyzxfsqp085qx17wp9xz7z4w79kks0jpdba7mx8k9i097hs09k";
+    sha256 = "0d9yn51rg59k39h0w6wmvjqz9n7najm9x8yb79rparbcwwrd3gis";
   };
 } // (args.argsOverride or {}))