The build images are outdated

[BlackDex]

Hello there,

I'm the maintainer of the build-images you are using.

silly-cors/Dockerfile

Lines 3 to 4 in cc8f6c6

	FROM --platform=${BUILDPLATFORM} ghcr.io/blackdex/rust-musl:aarch64-musl-stable-${RUST_VERSION}-openssl3 as build-arm64
	FROM --platform=${BUILDPLATFORM} ghcr.io/blackdex/rust-musl:x86_64-musl-stable-${RUST_VERSION}-openssl3 as build-amd64

I'm planning on removing the -openssl3 postfix on the next change (which will be shortly)
Main reason is that only openssl3 is build for a while now.

When updating to a newer version of Rust, i would suggest to also remove the -openssl3 postfix.

Also, the new images will be using musl v1.2.5.

Cheers.