API level 30 upgrade: AOSP/Gallery2

The AndroidManifest.xml file of the AOSP Gallery app
has been upgraded so that its targetSdkVersion is 30.

Test: manual - after the change, the app built,
initialized, and ran successfully with all of the UI
features functioning properly. CTS provider tests were
also run and the output can be seen below:

=============== Summary ===============
Total Run time: 8m 53s
1/1 modules completed
Total Tests       : 376
PASSED            : 362
FAILED            : 0
IGNORED           : 6
============== End of Results ==============

Change-Id: I55b30d8192362bbdbab43566d80a4f888fcd0d01
1 file changed