Fix multiple vulnerabilities in sqlite3.

Approved by: so
Security: FreeBSD-SA-20:22.sqlite
Security: CVE-2020-11655
Security: CVE-2020-11656
Security: CVE-2020-13434
Security: CVE-2020-13435
Security: CVE-2020-13630
Security: CVE-2020-13631
Security: CVE-2020-13632