Add //test:fileutils_unittests to //test:test_support_unittests deps.
Add //test:fileutils_unittests to //test:test_support_unittests deps.

The dependency has been accidentally removed in:
https://webrtc-review.googlesource.com/c/src/+/67161

Bug: None
Change-Id: I568a5d172ff327b31fe80227f5d0ed9f9fc8a93c
Reviewed-on: https://webrtc-review.googlesource.com/95485
Reviewed-by: Patrik Höglund <b486136ee68458b09c92c86c39f451c87d6ef6a1@webrtc.org>
Commit-Queue: Mirko Bonadei <d2c43c210eae6feef04f53bae50885e8152edcca@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#24395}
TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc