Bump apollo-server-express in /@core-server/graphql
Bump apollo-server-express in /@core-server/graphql

Bumps [apollo-server-express](https://github.com/apollographql/apollo-server/tree/HEAD/packages/apollo-server-express) from 2.13.1 to 2.15.1.
- [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-express@2.15.1/packages/apollo-server-express)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Skyhark-Projects/Core-Server,Skyhark-Projects/Core-Server,Skyhark-Projects/Core-Server,Skyhark-Projects/Core-Server