chore: verify & commentate socket2 requirement

[goto-bus-stop]

Opened a fred.rs PR to fix upstream; meanwhile we'll keep the explicit socket2 dependency.

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[apollo-librarian]

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File Changes

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* graphos/routing/(latest)/self-hosted/index.mdx
* graphos/routing/(latest)/self-hosted/containerization/aws.mdx
* graphos/routing/(latest)/self-hosted/containerization/azure.mdx
* graphos/routing/(latest)/self-hosted/containerization/docker-router-only.mdx
* graphos/routing/(latest)/self-hosted/containerization/docker.mdx
* graphos/routing/(latest)/self-hosted/containerization/gcp.mdx
* graphos/routing/(latest)/self-hosted/containerization/index.mdx
* graphos/routing/(latest)/self-hosted/containerization/kubernetes/quickstart.mdx
* graphos/routing/(latest)/_sidebar.yaml
- graphos/routing/(latest)/self-hosted/containerization/proxy-certificates.mdx

Build ID: 6b70aa54856e4377b87084b9
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URL: https://www.apollographql.com/docs/deploy-preview/6b70aa54856e4377b87084b9

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