[submodules] Update submodule pins

This change synchronizes submodule revisions with Jiri manifest state.
These revisions have no bearing on Fuchsia builds or local checkouts
and are only used by Code Search.

If you wish to update a repository's revision, update the corresponding
Jiri manifest and the change will automatically be synchronized to
submodules.

Roller-URL: https://cr-buildbucket.appspot.com/build/8719413673343505553
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ia002311a4f4b7d106bbafe9f2eab03d6c796dc21
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1236186

Author: global-integration-roller