Update docker.elastic.co/ci-agent-images/quality-gate-seedling Docker…

… tag to v0.0.4 (#183781)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.elastic.co/ci-agent-images/quality-gate-seedling | patch |
`0.0.2` -> `0.0.4` |

---

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.buildkite/pipelines/quality-gates/pipeline.kibana-tests.yaml

@@ -26,7 +26,7 @@ steps:
       QG_PIPELINE_LOCATION: ".buildkite/pipelines/quality-gates"
     command: "make -C /agent run-environment-tests" # will trigger https://buildkite.com/elastic/kibana-tests
     agents:
-      image: "docker.elastic.co/ci-agent-images/quality-gate-seedling:0.0.2"
+      image: "docker.elastic.co/ci-agent-images/quality-gate-seedling:0.0.4"
 
 notify:
   - slack: "${TEAM_CHANNEL?}"