net/rabbiteer: Fix build with rust 1.76.0

Import upstream patch [1] to fix the following error:

error[E0310]: the parameter type `T` may not live long enough
    --> /wrkdirs/usr/ports/net/rabbiteer/work/rabbiteer-rs-c881238/cargo-crates/rustc-serialize-0.3.24/src/serialize.rs:1155:5

[1] rust-lang-deprecated/rustc-serialize@75ce924

PR:		276920
Approved by:	portmgr (build fix blanket)

net/rabbiteer/files/patch-cargo-crates_rustc-serialize-0.3.24_src_serialize.rs

@@ -0,0 +1,13 @@
+https://github.com/rust-lang-deprecated/rustc-serialize/commit/75ce92452a5f7c25a58fdea81e5f6f888630a2c9
+
+--- cargo-crates/rustc-serialize-0.3.24/src/serialize.rs.orig	2024-02-10 11:58:37 UTC
++++ cargo-crates/rustc-serialize-0.3.24/src/serialize.rs
+@@ -1152,7 +1152,7 @@ impl<'a, T: ?Sized> Decodable for Cow<'a, T>
+     where T: ToOwned, T::Owned: Decodable
+ {
+     #[inline]
+-    fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
++    fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'a, T>, D::Error> {
+         Ok(Cow::Owned(try!(Decodable::decode(d))))
+     }
+ }