Fixes #13929 - Pin test_after_commit to version supporting Ruby 1.9
(cherry picked from commit 0b72ea7d19f9c714a448ad84a721e17b5a96e8e0)
Fixes #13929 - Pin test_after_commit to version supporting Ruby 1.9
(cherry picked from commit 0b72ea7d19f9c714a448ad84a721e17b5a96e8e0)