ftp/curl: Update to 8.22.0

• Remove TLS_SRP option

Changes: https://curl.se/changes.html
Security: CVE-2026-13608, CVE-2026-18924, CVE-2026-19931, CVE-2026-80229, CVE-2026-80230, CVE-2026-80231, CVE-2026-80255, CVE-2026-82208, CVE-2026-82209

(cherry picked from commit 83a2de6dcfaf4075aab01ae67a883604a16ff828)