events: Increased test tolerance to +-5ms

TESTS/events/queue/main.cpp

@@ -70,7 +70,7 @@ SIMPLE_POSTS_TEST(0)
 
 
 void time_func(Timer *t, int ms) {
-    TEST_ASSERT_INT_WITHIN(2, ms, t->read_ms());
+    TEST_ASSERT_INT_WITHIN(5, ms, t->read_ms());
     t->reset();
 }
 

TESTS/events/timing/main.cpp

@@ -93,7 +93,7 @@ void semaphore_timing_test() {
         int taken = timer.read_us() - start;
 
         printf("delay %dms => error %dus\r\n", delay, abs(1000*delay - taken));
-        TEST_ASSERT_INT_WITHIN(2000, taken, delay * 1000);
+        TEST_ASSERT_INT_WITHIN(5000, taken, delay * 1000);
 
         led = !led;
     }