Bump Security String to 2021-07-05

Implemented:
============
CVE:            References:  Type:  Severity:  Updated AOSP versions:
CVE-2020-0368   A-143230980  ID     High       11
CVE-2021-0486   A-171430330  EoP    High       10, 11
CVE-2021-0585   A-184963385  EoP    High       8.1, 9, 10, 11
CVE-2021-0586   A-182584940  EoP    High       8.1, 9, 10, 11
CVE-2021-0587   A-185259758  EoP    High       8.1, 9, 10, 11
CVE-2021-0589   A-180939982  EoP    High       8.1, 9, 10, 11
CVE-2021-0590   A-175213041  ID     High       8.1, 9, 10, 11
CVE-2021-0594   A-176445224  EoP    High       8.1, 9, 10, 11
CVE-2021-0596   A-181346550  ID     High       8.1, 9, 10, 11
CVE-2021-0597   A-176496502  ID     High       8.1, 9, 10, 11
CVE-2021-0599   A-175614289  ID     High       8.1, 9, 10, 11
CVE-2021-0600   A-179042963  EoP    High       8.1, 9, 10, 11
CVE-2021-0601   A-180643802  ID     High       8.1, 9, 10, 11
CVE-2021-0602   A-177573895  EoP    High       10, 11
CVE-2021-0603   A-182809425  EoP    High       11
CVE-2021-0604   A-179910660  ID     High       8.1, 9, 10, 11

Previously Implemented:
=======================
CVE:            References:  Type:  Severity:  Updated AOSP versions:  Prior Change:
CVE-2020-0417   A-154319182  EoP    High       8.1, 9, 10              8b04d000736d
CVE-2021-0514   A-162604069  RCE    High       8.1, 9, 10, 11          ba68639, 9a27c7fa
CVE-2021-0515   A-167389063  RCE    High       8.1, 9, 10, 11          ba68639, 9a27c7fa

Not Implemented:
================
None

Not Applicable (platform source):
=================================
CVE:            References:  Type:  Severity:  Updated AOSP versions:
CVE-2021-0441   A-174495520  EoP    High       11
CVE-2021-0518   A-176541017  ID     High       11
CVE-2021-0588   A-177238342  ID     High       8.1, 9

Change-Id: Ia1f8e3e09f28af5b576514f058e2c385cc0bf11f