Bump Security String to 2020-05-05

Implemented:
============
CVE:            References:     Type:   Severity:       Updated AOSP versions:
CVE-2020-0024   A-137015265     EoP     High            8.0, 8.1, 9, 10
CVE-2020-0093   A-148705132     ID      High            8.0, 8.1, 9, 10
CVE-2020-0096   A-145669109     EoP     Critical        8.0, 8.1, 9
CVE-2020-0098   A-144285917     EoP     High            8.0, 8.1, 9, 10
CVE-2020-0100   A-150156584     ID      High            8.0, 8.1
CVE-2020-0101   A-144767096     ID      High            8.0, 8.1, 9, 10
CVE-2020-0102   A-143231677     EoP     High            8.0, 8.1, 9, 10

Not Implemented:
================
CVE:            References:     Type:   Severity:       Updated AOSP versions:
None

Not Applicable (platform source):
=================================
CVE:            References:     Type:   Severity:       Updated AOSP versions:
CVE-2020-0092   A-145135488     ID      High            10
CVE-2020-0094   A-148223871     EoP     High            9, 10
CVE-2020-0097   A-145981139     EoP     High            9, 10
CVE-2020-0103   A-148107188     RCE     Critical        9, 10
CVE-2020-0104   A-144430870     ID      Moderate        9, 10
CVE-2020-0105   A-144285084     EoP     High            9, 10
CVE-2020-0106   A-148414207     ID      High            10
CVE-2020-0109   A-148059175     EoP     High            9, 10

Signed-off-by: Vasyl Gello <vasek.gello@gmail.com>
Change-Id: Ide09bd6adbc346726f49eddc7ccaba488f6a4205