Add arm64e-apple-tvos rustc target

It was added as target on 2024-09-21. See related PR:

- rust-lang/rust#130614

Author: PuercoPop

guix/rustup/build/manifest.scm

@@ -168,6 +168,7 @@
      arm64_32-apple-watchos
      arm64e-apple-darwin
      arm64e-apple-ios
+     arm64e-apple-tvos
      arm64ec-pc-windows-msvc
      armeb-unknown-linux-gnueabi
      armebv7r-none-eabi