fix(ci): configure ARM64 cross-compilation linker

Set the correct linker for aarch64-unknown-linux-gnu target
to fix the release build failure. The linker was trying to use
x86-64 format for ARM64 objects.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: copyleftdev

.github/workflows/release.yml

@@ -49,6 +49,15 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y gcc-aarch64-linux-gnu
 
+      - name: Configure ARM64 linker
+        if: matrix.target == 'aarch64-unknown-linux-gnu'
+        run: |
+          mkdir -p .cargo
+          cat >> .cargo/config.toml << 'EOF'
+          [target.aarch64-unknown-linux-gnu]
+          linker = "aarch64-linux-gnu-gcc"
+          EOF
+
       - name: Install musl tools
         if: matrix.target == 'x86_64-unknown-linux-musl'
         run: |