update OpenHands version tag

README.md

@@ -98,14 +98,14 @@ mkdir -p ~/.openhands && echo '{"language":"en","agent":"CodeActAgent","max_iter
 docker pull docker.all-hands.dev/all-hands-ai/runtime:0.48-nikolaik
 
 docker run -it --rm --pull=always \
-    -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:0.48-nikolaik \
+    -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:0.50-nikolaik \
     -e LOG_ALL_EVENTS=true \
     -v /var/run/docker.sock:/var/run/docker.sock \
     -v ~/.openhands:/.openhands \
     -p 3000:3000 \
     --add-host host.docker.internal:host-gateway \
     --name openhands-app \
-    docker.all-hands.dev/all-hands-ai/openhands:0.48
+    docker.all-hands.dev/all-hands-ai/openhands:0.50
 ```
 
 ### Local inference