Fix ca_certs_bin_path assignment in meson.build for correct output path

meson.build

@@ -33,6 +33,7 @@ tracked_install_paths = [
 ]
 
 cargo_target_dir = meson.current_build_dir() / 'cargo-target'
+ca_certs_bin_path = meson.current_build_dir() / 'ca-certs'
 
 ca_certs_bin = custom_target(
   'ca-certs-bin',
@@ -43,7 +44,7 @@ ca_certs_bin = custom_target(
     'set -eu; src="$1"; out="$2"; target_dir="$3"; cd "$src"; CARGO_TARGET_DIR="$target_dir" "$4" build --locked --release; cp "$target_dir/release/ca-certs" "$out"',
     'meson-cargo-build',
     meson.project_source_root(),
-    '@OUTPUT@',
+    ca_certs_bin_path,
     cargo_target_dir,
     cargo,
   ],