mavsdk_tests: relax timeout for offboard goto

This probably makes sense because we ask for more accuracy, so it will
take longer to reach a position.

test/mavsdk_tests/test_multicopter_offboard.cpp

@@ -47,7 +47,7 @@ TEST_CASE("Offboard takeoff and land", "[multicopter][offboard][nogps]")
 	tester.wait_until_ready_local_position_only();
 	tester.store_home();
 	tester.arm();
-	std::chrono::seconds goto_timeout = std::chrono::seconds(10);
+	std::chrono::seconds goto_timeout = std::chrono::seconds(20);
 	tester.offboard_goto(takeoff_position, 0.1f, goto_timeout);
 	tester.offboard_land();
 	tester.wait_until_disarmed(goto_timeout);
@@ -65,7 +65,7 @@ TEST_CASE("Offboard position control", "[multicopter][offboard][nogps]")
 	tester.wait_until_ready_local_position_only();
 	tester.store_home();
 	tester.arm();
-	std::chrono::seconds goto_timeout = std::chrono::seconds(10);
+	std::chrono::seconds goto_timeout = std::chrono::seconds(20);
 	tester.offboard_goto(takeoff_position, 0.1f, goto_timeout);
 	tester.offboard_goto(setpoint_1, 0.1f, goto_timeout);
 	tester.offboard_goto(setpoint_2, 0.1f, goto_timeout);