Force musl targets for cargo-binstall to avoid GLIBC mismatch

The glibc-linked prebuilt cargo-make binary requires GLIBC 2.39,
newer than what's on the node:20-bookworm image. Musl binaries
are statically linked and avoid the mismatch.

.forgejo/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Install cargo-make and cargo-audit
         run: |
           for crate in cargo-make cargo-audit; do
-            command -v "$crate" >/dev/null 2>&1 || cargo binstall -y "$crate"
+            command -v "$crate" >/dev/null 2>&1 || cargo binstall -y --targets x86_64-unknown-linux-musl "$crate"
           done
 
       - name: Run CI checks