`curl` fails to connect to `zilla` in `asyncapi.sse.proxy` and `asyncapi.sse.kafka.proxy` examples

[ankitk-me]

Describe the bug
When running the asyncapi.sse.proxy & asyncapi.sse.kafka.proxy examples, curl command fails to connect to zilla

To Reproduce
Steps to reproduce the behavior:

1. Go to asyncapi.sse.proxy
2. Start the example using ./setup.sh
3. Trigger mentioned request:

curl -N --http2 -H "Accept:text/event-stream" -v "http://localhost:7114/events/1"

4. See error:

% curl -N --http2 -H "Accept:text/event-stream" -v "http://localhost:7114/events/1"
                * Host localhost:7114 was resolved.
                * IPv6: ::1
                * IPv4: 127.0.0.1
                *   Trying [::1]:7114...
                * Connected to localhost (::1) port 7114
                > GET /events/1 HTTP/1.1
                > Host: localhost:7114
                > User-Agent: curl/8.7.1
                > Connection: Upgrade, HTTP2-Settings
                > Upgrade: h2c
                > HTTP2-Settings: AAMAAABkAAQAoAAAAAIAAAAA
                > Accept:text/event-stream
                >
                * Request completely sent off
                * Empty reply from server
                * Closing connection
                curl: (52) Empty reply from server

Expected behavior
Client should be able to consume events.

Next Step
Enable asyncapi.sse.proxy & asyncapi.sse.kafka.proxy example test in zilla build workflow.