Remove duplicate CVE from Changelog

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: svetasmirnova

Changelog

@@ -2,7 +2,7 @@ Changelog for Percona Toolkit
 
 v3.7.1-4 released 2026-07-02
 
-This release addresses multiple important security vulnerabilities in Go libraries (CVE-2026-25680, CVE-2026-25681, CVE-2026-27136, CVE-2026-27136, CVE-2026-33811, CVE-2026-33814, CVE-2026-39820, CVE-2026-39821, CVE-2026-39827, CVE-2026-39828, CVE-2026-39829, CVE-2026-39830, CVE-2026-39832, CVE-2026-39835, CVE-2026-39836, CVE-2026-42499, CVE-2026-42502, CVE-2026-42504, CVE-2026-42508, CVE-2026-46595, CVE-2026-46597)
+This release addresses multiple important security vulnerabilities in Go libraries (CVE-2026-25680, CVE-2026-25681, CVE-2026-27136, CVE-2026-33811, CVE-2026-33814, CVE-2026-39820, CVE-2026-39821, CVE-2026-39827, CVE-2026-39828, CVE-2026-39829, CVE-2026-39830, CVE-2026-39832, CVE-2026-39835, CVE-2026-39836, CVE-2026-42499, CVE-2026-42502, CVE-2026-42504, CVE-2026-42508, CVE-2026-46595, CVE-2026-46597)
 
 * Fixed bug PT-2546: CVEs found in percona/percona-toolkit:3.7.1-3 docker image