CI fixes for ArduinoBHY2Host (#142)

* fix: Make `Math.h` lowercase

* ci: Add connectivity libraries to `depends` field

* ci: Add `Arduino_Cellular` to depends field

* ci: Add `ArduinoCellular`

* ci: add `Arduino_Cellular` directly to workflow

* ci: remove `ArduinoCellular` from `library.properties`

examples/Magnetometer/Magnetometer.ino

@@ -14,7 +14,7 @@
  */
 
 #include "Arduino_BHY2.h"
-#include "Math.h"
+#include "math.h"
 
 SensorXYZ magnetometer(SENSOR_ID_MAG);