Log Message:
mit-krb5: updated to 1.21.3

Major changes in 1.21.3 (2024-06-26)

Fix vulnerabilities in GSS message token handling [CVE-2024-37370, CVE-2024-37371].
Fix a potential bad pointer free in krb5_cccol_have_contents().
Fix a memory leak in the macOS ccache type.