Add test to verify result from Build#getSerial matches CDD regex

Android 13 updated the CDD to require the result from Build#getSerial
only return alphanumeric characters. This commit adds a new CTS test
to verify the value returned from this method matches the regular
expression declared in the CDD.

Bug: 202234081
Test: atest AccessSerialNumberTest
Change-Id: I101eded8a73c465dbac01e99f9952d766fd66bb0
2 files changed