Add CI pipeline for Swift 5.10

[rnro]

Motivation:

Now that Swift 5.9 is GM we should update the CI pipelines

Modifications:

• Add a 5.10 nightly docker compose file
• Update the 5.9 compose file to stop using nightlies

Result:

Remove add CI support for 5.10

[Lukasa]

@swift-server-bot add to allowlist