Open Tempo OTEL HTTP port (#7033)

## What changed?
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Open up Grafana Tempo's OTEL HTTP port, too.

## Why?
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It's useful to send traces via curl.

## How did you test it?
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test? Checked in staging env? -->

## Potential risks
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change to production? -->

## Documentation
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new behavior is added, have you described that in `docs/`? -->

## Is hotfix candidate?
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develop/docker-compose/docker-compose.darwin.yml

@@ -18,6 +18,7 @@ services:
     ports:
       - "3200:3200" # tempo
       - "4317:4317" # otlp grpc
+      - "4318:4318" # otlp http
     networks:
       - temporal-dev-network
   temporal-ui: