Roll src/third_party/catapult/ ab911d94c..20358d6bf (3 commits).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/ab911d94c16a..20358d6bf8c9

$ git log ab911d94c..20358d6bf --date=short --no-merges --format='%ad %ae %s'

TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2170183003
Cr-Commit-Position: refs/heads/master@{#407067}

DEPS

@@ -88,7 +88,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': 'ab911d94c16a75eb028a904f8796cc1463fd6dae',
+  'catapult_revision': '20358d6bf8c99ec34037b78e0f8b9022622d362a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.