Bump apollo-server from 2.14.2 to 2.25.3 in /service-gateway

Bumps [apollo-server](https://github.com/apollographql/apollo-server/tree/HEAD/packages/apollo-server) from 2.14.2 to 2.25.3.
- [Release notes](https://github.com/apollographql/apollo-server/releases)
- [Changelog](https://github.com/apollographql/apollo-server/blob/main/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-server/commits/apollo-server@2.25.3/packages/apollo-server)

---
updated-dependencies:
- dependency-name: apollo-server
  dependency-type: direct:production
...

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Author: dependabot[bot]