4.2.0

(chore): Fix 3 high container vulnerabilities: update python3/python3-libs to 3.9.25-1.amzn2023.0.4 (ALAS2023-2026-1583) and libnghttp2 to 1.59.0-3.amzn2023.0.2 (ALAS2023-2026-1542, CVE-2026-27135).