ci: Update piglit and deqp/piglit-runner.
This brings in some major new features in the runner:
- piglit tests now include subtest reporting
- "-t" support for quick include-filtering of tests.
- piglit tests that crash after their result report are considered crashes
- throws a nice error if you try to annotate the same failure twice (lvp's dEQP-VK.glsl.builtin.precision.pow.highp.vec2,Fail)
Since the runner catches piglit test bugs where the same subtest is run twice, we also uprev piglit to pull in the fixes for those.