AV1 test: change ssim threshold

Bug: webrtc:12519
Change-Id: Ibdcaa08800d03d289f86e14cc7d94b5f2d3b7117
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/209480
Reviewed-by: Marco Paniconi <marpan@webrtc.org>
Commit-Queue: Jerome Jiang <jianj@google.com>
Cr-Commit-Position: refs/heads/master@{#33377}
diff --git a/modules/video_coding/codecs/test/videocodec_test_libaom.cc b/modules/video_coding/codecs/test/videocodec_test_libaom.cc
index a87b8fd..a96e2c9 100644
--- a/modules/video_coding/codecs/test/videocodec_test_libaom.cc
+++ b/modules/video_coding/codecs/test/videocodec_test_libaom.cc
@@ -68,7 +68,7 @@
   std::vector<RateControlThresholds> rc_thresholds = {
       {15, 8, 75, 2, 2, 2, 2, 1}};
 
-  std::vector<QualityThresholds> quality_thresholds = {{28, 25, 0.70, 0.62}};
+  std::vector<QualityThresholds> quality_thresholds = {{28, 25, 0.70, 0.60}};
 
   fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
 }