libdbi-perl vulnerabilities

USN-5030-1 addressed vulnerabilities in Perl DBI module. This
update provides the corresponding updates for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that the Perl DBI module incorrectly opened files outside
of the folder specified in the data source name. A remote attacker could
possibly use this issue to obtain sensitive information. (CVE-2014-10402)

It was discovered that the Perl DBI module incorrectly handled certain long
strings. A local attacker could possibly use this issue to cause the DBI
module to crash, resulting in a denial of service. (CVE-2020-14393)