[infrastructure] move infered nullness warnings to error and update EEA (#8949)

Signed-off-by: Jan N. Klug <jan.n.klug@rub.de>

bundles/org.openhab.binding.ambientweather/src/main/java/org/openhab/binding/ambientweather/internal/processor/RemoteSensor.java

@@ -73,6 +73,9 @@ public class RemoteSensor {
      * there are remote sensor values
      */
     private void updateSensorChannels(AmbientWeatherStationHandler handler, int i, final @Nullable String jsonData) {
+        if (jsonData == null) {
+            return;
+        }
         String sensorNumber = String.valueOf(i);
         StringReader stringReader = new StringReader(jsonData);
         JsonReader reader = new JsonReader(stringReader);