[openhabcloud] Removing content encoding when proxing. (#13559)

Signed-off-by: Dan Cunningham <dan@digitaldan.com>

bundles/org.openhab.io.openhabcloud/src/main/java/org/openhab/io/openhabcloud/internal/CloudService.java

@@ -237,6 +237,8 @@ public class CloudService implements ActionService, CloudClientListener, EventSu
         if (!httpClient.isRunning()) {
             try {
                 httpClient.start();
+                // we act as a blind proxy, don't try to auto decode content
+                httpClient.getContentDecoderFactories().clear();
             } catch (Exception e) {
                 logger.error("Could not start Jetty http client", e);
             }