cros-workon.eclass: add jq to BDEPEND

This eclass uses jq, but doesn't declare a dependency on it. This
creates a race condition when setting up the SDK that can cause build
failures. Let's add a BDEPEND to avoid the race condition.

BUG=b/307995090
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Idf33b21a1d340da215b6d45543cad5bd7f3c6e9a
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/64056
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: He Gao <hegao@google.com>
diff --git a/eclass/cros-workon.eclass b/eclass/cros-workon.eclass
index 70abc46..5a0dd31 100644
--- a/eclass/cros-workon.eclass
+++ b/eclass/cros-workon.eclass
@@ -24,6 +24,8 @@
 
 inherit cros-constants cros-credentials
 
+BDEPEND="app-misc/jq"
+
 # Default slotting for cros-workon packages.
 #
 # Gentoo Slotting Guide: