CLSA-2026-1774346288 vim: Fix of 2 CVEs

CVE-2026-28417: fix OS command injection via shell metacharacters in netrw URI hostname and port - CVE-2026-28421: fix heap-buffer-overflow and SEGV in swap file recovery due to unvalidated pointer block fields...

CLSA-2026-1774345469 vim: Fix of 2 CVEs

CVE-2026-28417: fix OS command injection via shell metacharacters in netrw URI hostname and port - CVE-2026-28421: fix heap-buffer-overflow and SEGV in swap file recovery due to unvalidated pointer block fields...