[SECURITY] [DLA 1957-1] tzdata new upstream version

Package : tzdata
Version : 2019c-0+deb8u1

This update includes the changes in tzdata 2018c. Notable
changes are:

• Brazil has canceled DST and will stay on standard time indefinitely.
• Fiji's next DST transitions will be 2019-11-10 and 2020-01-12
  instead of 2019-11-03 and 2020-01-19.
• Norfolk Island will observe Australian-style DST starting in
  spring 2019. The first transition is on 2019-10-06.

For Debian 8 "Jessie", this problem has been fixed in version
2019c-0+deb8u1.

We recommend that you upgrade your tzdata packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS