Fix broken Makefile scripting for yq

tests/Makefile

@@ -94,11 +94,12 @@ test: build-initcontainer build-testapp check-language-arg
 	@sleep 5
 	@kubectl wait --for=condition=Ready -n default --all pods
 # If yq is installed, check for the initcontainer to be visible on the pod spec
-	@which -s yq && \
-		echo "===== Ensuring initcontainer was successfully attached by operator. ====="; \
-		kubectl get pods --output yaml | yq '.items[].spec.initContainers[].name' | grep -q "newrelic-instrumentation-" \
-			&& echo "===== Initcontainer successfully attached. =====" \
-			|| { echo -e "===== Operator failed to attach initcontainer. =====" >&2; exit 1; }
+	@echo "===== Ensuring initcontainer was successfully attached by operator. =====" && \
+		which -s yq && { \
+			kubectl get pods --output yaml | yq '.items[].spec.initContainers[].name' | grep -q "newrelic-instrumentation-" \
+				&& echo "===== Initcontainer successfully attached. =====" \
+				|| { echo -e "===== Operator failed to attach initcontainer. =====" >&2; exit 1; } } \
+			|| echo "yq is not installed. Skipping."
 	@echo "===== Opening tunnel to test app and opening web browser. ====="
 	@minikube service test-app-${INITCONTAINER_LANGUAGE}-service -n default