Docs for Apollo Federation recommend installing @apollo/federation

Is there an existing issue for this?

[X] I have searched the existing issues

Current behavior

The official docs Federation with Apollo recommend installing the @apollo/federation module.

During the installation, some deprecation warnings are displayed and the NPM page of this module also states that this package is deprecated.

npm install --save @apollo/federation
npm WARN deprecated apollo-server-env@4.2.1: The `apollo-server-env` package is part of Apollo Server v2 and v3, which are now deprecated (end-of-life October 22nd 2023). This package's functionality is now found in the `@apollo/utils.fetcher` package. See https://www.apollographql.com/docs/apollo-server/previous-versions/ for more details.
npm WARN deprecated apollo-server-types@3.8.0: The `apollo-server-types` package is part of Apollo Server v2 and v3, which are now deprecated (end-of-life October 22nd 2023). This package's functionality is now found in the `@apollo/server` package. See https://www.apollographql.com/docs/apollo-server/previous-versions/ for more details.
npm WARN deprecated apollo-reporting-protobuf@3.4.0: The `apollo-reporting-protobuf` package is part of Apollo Server v2 and v3, which are now deprecated (end-of-life October 22nd 2023). This package's functionality is now found in the `@apollo/usage-reporting-protobuf` package. See https://www.apollographql.com/docs/apollo-server/previous-versions/ for more details.
npm WARN deprecated @apollo/subgraph@0.6.1: All v0.x versions of @apollo/subgraph are now deprecated with an end-of-life date of September 22, 2023. Apollo recommends upgrading to v2.x as soon as possible. For more details, see our announcement blog post (https://www.apollographql.com/blog/announcement/backend/announcing-the-end-of-life-schedule-for-apollo-gateway-v0-x/) and documentation (https://www.apollographql.com/docs/federation/federation-2/backward-compatibility/#is-official-support-ending-for-apollogateway-v0x).
npm WARN deprecated @apollo/federation@0.38.1: The @apollo/federation package is deprecated and will reach end-of-life September 22, 2023. It contains outdated utilities for both running subgraphs and composing supergraph schemas. Please migrate to the appropriate package for your use case (@apollo/subgraph or @apollo/composition). For more details, see our announcement blog post (https://www.apollographql.com/blog/announcement/backend/announcing-the-end-of-life-schedule-for-apollo-gateway-v0-x/) and documentation (https://www.apollographql.com/docs/federation/federation-2/backward-compatibility/#is-official-support-ending-for-apollogateway-v0x).

For now our servers seem to run fine even without @apollo/federation. Is this package still required with v12?

Minimum reproduction code

none

Steps to reproduce

No response

Expected behavior

After upgrading to Apollo Server v4 I would not expect to use deprecated modules.

Package version

12.0.7

Graphql version

graphql: 16.6.0 @apollo/subgraph: 2.4.12 @apollo/server: 4.9.1

NestJS version

10.1.3

Node.js version

18.12.1

In which operating systems have you tested?

[X] macOS
[ ] Windows
[ ] Linux

Other