MediaPlayerTest: upscale video for testChangeSubtitleTrack

Change resolution of the test video file to 256x192 to support codecs
that have a minimum-resolution requirement not met by the old
resolution of 120x90.

Bug: 144728971

Test: android.media.cts.MediaPlayerTest#testChangeSubtitleTrack
Change-Id: I38eec7a2a73293be4bfecdb79b1f8ca57305d009
diff --git a/tests/tests/media/res/raw/testvideo_with_2_subtitle_tracks.mp4 b/tests/tests/media/res/raw/testvideo_with_2_subtitle_tracks.mp4
index b8dce17..ac70dd3 100755
--- a/tests/tests/media/res/raw/testvideo_with_2_subtitle_tracks.mp4
+++ b/tests/tests/media/res/raw/testvideo_with_2_subtitle_tracks.mp4
Binary files differ