cargo update, upgrade alloy

Removes a dated proc-macro-crate patch.

patches/proc-macro-crate/Cargo.toml

@@ -1,17 +0,0 @@
-[package]
-name = "proc-macro-crate"
-version = "2.0.1"
-description = "Patches proc-macro-crate 2 to 3"
-license = "MIT"
-repository = "https://github.com/serai-dex/serai/tree/develop/patches/proc-macro-crate"
-authors = ["Luke Parker <lukeparker5132@gmail.com>"]
-keywords = []
-edition = "2021"
-rust-version = "1.66"
-
-[package.metadata.docs.rs]
-all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
-
-[dependencies]
-proc-macro-crate = "3"

patches/proc-macro-crate/src/lib.rs

@@ -1 +0,0 @@
-pub use proc_macro_crate::*;