fix: correct REPO_ROOT path after script relocation

.github/scripts/ is two levels below repo root, not one.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Emin017

.github/scripts/build-wheel.sh

@@ -5,7 +5,7 @@ set -euo pipefail
 # Intended to run inside manylinux_2_34_x86_64 container or equivalent.
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
 
 cd "$REPO_ROOT"