[forensics] Increase the wait time for `fx snapshot`

* Double the sleep time of `fx snapshot` so folks see the warning and consider switching to `ffx target snapshot`.

Bug: 70281
Change-Id: I5feac6a7baa6670bf96caa112f71219cb6fdfa83
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/559894
Commit-Queue: Daniel Salazar V. <villarreald@google.com>
Reviewed-by: Francois Rousseau <frousseau@google.com>
diff --git a/tools/devshell/contrib/snapshot b/tools/devshell/contrib/snapshot
index a86048a..b848bca 100755
--- a/tools/devshell/contrib/snapshot
+++ b/tools/devshell/contrib/snapshot
@@ -79,10 +79,9 @@
   fi
 fi
 
-# TODO(fxbug.dev/70281) Double the wait time every monday
-fx-warn "Consider running ffx target snapshot instead. fx snapshot is being deprecated and will \
-take longer and longer."
-sleep 8
+fx-warn "Consider running \`ffx target snapshot\` instead. fx snapshot is being deprecated in \
+September 2021, and waits for 16s before grabbing a snapshot."
+sleep 16
 
 # At this point, we know that we have a valid output directory.