Cargo update without rust_eth_kzg (#6848)

Update cargo dependencies while keeping `rust_eth_kzg` pinned to `0.5.1` due to the regression described in:

- https://github.com/sigp/lighthouse/pull/6608

The changes from that PR were not sufficient to actually pin the dependencies of `rust_eth_kzg`, because the dependencies from the workspace Cargo.toml file were not being used anywhere. To fix this, I've added them as explicit dependencies in `crypto/kzg/Cargo.toml`. With this change, `cargo update` no longer tries to update them.

Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.80.0-bullseye AS builder
+FROM rust:1.84.0-bullseye AS builder
 RUN apt-get update && apt-get -y upgrade && apt-get install -y cmake libclang-dev
 COPY . lighthouse
 ARG FEATURES