b/t/toolchain-bundle: add python3.12

Change-Id: Iedf0c35f5f4334bf5c93c5cc937ef855cbabd5c6
Reviewed-on: https://review.monogon.dev/c/monogon/+/4411
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/build/toolchain/toolchain-bundle/default.nix b/build/toolchain/toolchain-bundle/default.nix
index f59a6a8..794b6d2 100644
--- a/build/toolchain/toolchain-bundle/default.nix
+++ b/build/toolchain/toolchain-bundle/default.nix
@@ -30,6 +30,7 @@
               qemu-minimal # custom pkg
               m4
               strace
+              python3Minimal
             ];
           };
         in
@@ -44,7 +45,7 @@
 
           installPhase = ''
             mkdir $out
-            mv bundle.tar.zst $out/${name}-${platform.hostPlatform.config}-${lib.version}.tar.zst
+            mv bundle.tar.zst $out/${name}-${platform.hostPlatform.config}.tar.zst
           '';
         }
       ))