batman-adv: 2023.1 -> 2023.2

From https://www.open-mesh.org/news/113:

batman-adv

support latest kernels (4.14 - 6.5)
bugs squashed:
avoid potential invalid memory access when processing ELP/OGM2 packets
drop pending DAT worker when interface shuts down
inform network stack about automatically adjusted MTUs
keep user defined MTU limit when MTU is recalculated
fix packet memory leak when sending OGM2 via inactive interfaces
fix TT memory leak for roamed back clients

alfred

receive data with valid source on unix sock without active interface

Happy routing,

The B.A.T.M.A.N. team

pkgs/os-specific/linux/batman-adv/version.nix

···
 {
-  version = "2023.1";
+  version = "2023.2";
 
   sha256 = {
-    batman-adv = lib.fakeSha256;
-    alfred = lib.fakeSha256;
-    batctl = lib.fakeSha256;
+    batman-adv = "sha256-OQfc1X4sW/2dQHE5YLlAK/HaT4DFm1/wN3ifu7vY+iU=";
+    alfred = "sha256-qSBgKFZPieW/t3FK4piDoWEPYr4+YcCW4f6zYgBxjg4=";
+    batctl = "sha256-cLX5MfpjYyVpe9829tE0oDxJBvTBfLdlCjxxSQFDbsg=";
   };
 }