Updates the glslang_validator binary for Linux in the same commit.

Bug: angleproject:3333
Change-Id: Ide42781ec4951e7c09307a0a3b96c36c6ea29d23
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1553828
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>