Merge pull request #8476 from gerrit-photon/master

Update photon image

library/photon

@@ -15,6 +15,6 @@ Tags: 1.0, 1.0-20200717
 GitFetch: refs/heads/1.0-20200717
 GitCommit: 3c36e13019d1de691c5f9254d761fa597c2a54bc
 
-Tags: 2.0, 2.0-20200710
-GitFetch: refs/heads/2.0-20200710
-GitCommit: 0b553b26b89b374d8184e63db204a170e762c5ba
+Tags: 2.0, 2.0-20200731
+GitFetch: refs/heads/2.0-20200731
+GitCommit: 5f72b116db6ace3377963debd91c5c901ce7859b