fix: add perl and make to Dockerfile builder stage for openssl-sys

[JiayuuWang]

Summary

Fixes #950.

The openssl-sys crate vendors OpenSSL and compiles it from source when a suitable system OpenSSL is not found. The vendored build requires perl (for OpenSSL's Configure script) and make. Neither is present in the rust:1-slim-bookworm base image used for the builder stage, causing builds to fail with:

error: failed to run custom build command for `openssl-sys v0.9.x`
...
This perl implementation doesn't work, need perl 5.10 or above.
thread 'main' panicked at 'Failed to find perl'

Change

Add perl and make to the builder stage's apt-get install line:

# Before
RUN apt-get update && apt-get install -y pkg-config libssl-dev && rm -rf /var/lib/apt/lists/*

# After
RUN apt-get update && apt-get install -y pkg-config libssl-dev perl make && rm -rf /var/lib/apt/lists/*

This unblocks anyone trying to build from source on a fresh host, which is currently the only working install path since the GHCR image is not publicly accessible (see #894).