A tzdata bug fix update has been released for CentOS 7.

CEBA-2021:0013 CentOS 7 tzdata BugFix Update

CentOS Errata and Bugfix Advisory 2021:0013

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:0013

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
d43f51759f659c79abdf2a56831458fa8cf1af488cfda2fae914b1dd04bbaba0 tzdata-2020f-1.el7.noarch.rpm
3598bf42bdc531b55ad9bbe89ca716bd42b7f2e4ff19fa4082235369c9a26303 tzdata-java-2020f-1.el7.noarch.rpm

Source:
44565f45761eb60156f6f170109a52c17ba5d1264d3c0b8c2553867b8c530d82 tzdata-2020f-1.el7.src.rpm