[projects.cfg] Update revision.
[projects.cfg] Update revision.

Effective latency due to caching when chaning IdentityConfig identities or
adding a new one has been documented to be expected behavior.

TBR=nodir@chromium.org

Change-Id: I7c7dce8d053efb1c7313cf0b3bd3bdb3a3e81eb7
Reviewed-on: https://chromium-review.googlesource.com/c/1487077
Reviewed-by: Felix Matenaar <6f9f11a7d9d9f9d70470ce23ff837316447e1df6@chromium.org>
Commit-Queue: Felix Matenaar <6f9f11a7d9d9f9d70470ce23ff837316447e1df6@chromium.org>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go