ci: use 'python' instead of 'python3' for x64 macOS build

- actions/setup-python installs x64 Python as 'python' on Apple Silicon runners.
Using 'python3' may fall back to the system arm64 interpreter.

Author: bruc3van

.github/workflows/release.yml

@@ -29,11 +29,15 @@ jobs:
 
       - name: Verify Python architecture
         run: |
-          which python3
-          python3 -c "import platform; print(platform.machine())"
+          echo "=== python ==="
+          which python || true
+          python -c "import platform; print(platform.machine())" || true
+          echo "=== python3 ==="
+          which python3 || true
+          python3 -c "import platform; print(platform.machine())" || true
 
       - name: Build macOS x64 binary
-        run: python3 build_binaries.py darwin
+        run: python build_binaries.py darwin
 
       - name: Inspect binary
         run: file bin/darwin/docugenius-cli