cfm-device-monitor: use libbrillo-test, not libbrillo-test-${libbase_ver}

BUG=chromium:920513
TEST=CQ

Change-Id: Ia738a9a2edf09db1302c78a0728ff6596b6599f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/cfm-device-monitor/+/2309473
Reviewed-by: Joe Tessler <jrt@chromium.org>
Commit-Queue: Qijiang Fan <fqj@google.com>
Tested-by: Qijiang Fan <fqj@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index c28d1d3..f5e1c9c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -129,7 +129,7 @@
       ":target_defaults",
     ]
     pkg_deps = [
-      "libbrillo-test-${libbase_ver}",
+      "libbrillo-test",
       "libchrome-test-${libbase_ver}",
       "libcros_config",
     ]