Update media_app to tERUmejT2tSaTumq5zSy0ws4x3w3pAMkEcpgdkD5WTEC CIPD package.

CIPD package: https://chrome-infra-packages.appspot.com/p/chromeos_internal/apps/media_app/app/+/tERUmejT2tSaTumq5zSy0ws4x3w3pAMkEcpgdkD5WTEC

Release notes: http://go/media_app-x20/relnotes/Stable/media_app_202008160800_RC00.html

Bug: b/161497534, b/159083441, b/162187144, b/161966844

Change-Id: Id9854948dc2f0f28eb3ae7293919c013f2bb91cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2359971Reviewed-by: dstockwell <dstockwell@google.com>
Commit-Queue: Trent Apted <tapted@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798903}

DEPS

@@ -1561,7 +1561,7 @@ deps = {
     'packages': [
       {
         'package': 'chromeos_internal/apps/media_app/app',
-        'version': 'tnUpbECn-eLbumpU1g06p173LxX2eM_OP4QF_-OtILgC',
+        'version': 'tERUmejT2tSaTumq5zSy0ws4x3w3pAMkEcpgdkD5WTEC',
       },
     ],
     'condition': 'checkout_chromeos and checkout_src_internal',