chore(deps): update rust:1-alpine docker digest to 6398523

Author: renovate[bot]

apollo-rust-builder-musl/Dockerfile

@@ -5,7 +5,7 @@ FROM node:${NODE_VERSION}-alpine AS node
 
 # Fixing to a specific SHA rather than a mutable tag, stops rebuilds completely
 # changing the contents of the container without us realising.
-FROM rust:1-alpine@sha256:ec0413a092f4cc01b32e08f991485abe4467ef95c7416a6643a063a141c2e0ec
+FROM rust:1-alpine@sha256:63985230b69fbd90528857dabf261379eb47f285ccc69f577d17c3dfde721deb
 
 ARG TARGETPLATFORM