ci: add apple build target

Author: liamaharon

.github/workflows/build-release-binaries.yaml

@@ -31,6 +31,10 @@ jobs:
           toolchain: stable
           override: true
 
+      - name: Add apple target
+        if: matrix.platform.os == 'macos-latest'
+        run: rustup target add x86_64-apple-darwin
+
       - name: Add musl target
         if: matrix.platform.os == 'ubuntu-latest'
         run: rustup target add x86_64-unknown-linux-musl