Improve security and code quality: SHA-256 defaults, configurable clock drift, and dependency updates#2

marevol merged 4 commits intomaincodelibs/java-saml:mainfrom

claude/review-improve-implementation-01QwGqfL5YrycdYNH298vuZucodelibs/java-saml:claude/review-improve-implementation-01QwGqfL5YrycdYNH298vuZuCopy head branch name to clipboard