Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

Is this a breaking change?

• Yes
• No

How did you test this PR?

Vector config:

sources:
  prometheus:
    type: http
    address: 0.0.0.0:8686

sinks:
  keep:
    type: "keep"
    inputs: ["prometheus"]
    endpoint: "http://localhost:8080/alerts/event/vectordev?provider_id=test"
    api_key: "keepappkey"

Does this PR include user facing changes?

• Yes. Please add a changelog fragment based on our guidelines.
• No. A maintainer will apply the "no-changelog" label to this PR.

Checklist

• Please read our Vector contributor resources.
• If this PR introduces changes Vector dependencies (modifies Cargo.lock), please
  run dd-rust-license-tool write to regenerate the license inventory and commit the changes (if any). More details here.

References

• Closes: Add Keep sink #21965