Add bluetooth to default key map

Previously the key mapping in releasetool/sign_target_files_apks.py
is missing the aforementioned key that was introduced in Android 13,
so it's writing corrupted signatures in plat_mac_permissions.xml.

Test: make target-files-package otatools
sign_target_files_apks -o -d <CERT_ROOT> ...

Change-Id: If42907cffbd500281876f8f822cbb645583d06ed