expat: Fix of 3 CVEs

CVE-2017-9233: Fix external entity infinite loop bug - CVE-2018-20843: Fix extraction of namespace prefix from XML name - CVE-2019-15903: Deny internal entities closing the doctype heap overread...

CLSA-2026-1777304792 expat: Fix of 3 CVEs

CVE-2017-9233: Fix external entity infinite loop bug - CVE-2018-20843: Fix extraction of namespace prefix from XML name - CVE-2019-15903: Deny internal entities closing the doctype heap overread...

CLSA-2026-1777305047 expat: Fix of 3 CVEs

CVE-2017-9233: Fix external entity infinite loop bug - CVE-2018-20843: Fix extraction of namespace prefix from XML name - CVE-2019-15903: Deny internal entities closing the doctype heap overread...