Security: bump github.com/jackc/pgx/v5 from v5.6.0 to v5.10.0 (CVE-2026-33815, CVE-2026-33816)

[chethansiddagiri]

Two critical CVEs in transitive dependency github.com/jackc/pgx/v5:v5.6.0 in khook v0.0.4:

• CVE-2026-33815 (GHSA-xgrm-4fwx-7qm8)
• CVE-2026-33816 (GHSA-9jj7-4m8r-rfcm)

Both fixed in pgx v5.9.0 (jackc/pgx#2520). Fix: go get github.com/jackc/pgx/v5@v5.10.0 && go mod tidy