chore: upgrade ktor to 3.2.1 to avoid conflicting dependency

[amanjeetsingh150]

Proposed changes

Running maestro studio command gives an exception:

Exception in thread "main" java.lang.NoSuchMethodError: 'void io.ktor.server.application.Application.<init>(io.ktor.server.application.ApplicationEnvironment)'
        at io.ktor.server.engine.ApplicationEngineEnvironmentReloading.<init>(ApplicationEngineEnvironmentReloading.kt:67)
        at io.ktor.server.engine.ApplicationEngineEnvironmentBuilder.build(ApplicationEngineEnvironmentJvm.kt:75)
        at io.ktor.server.engine.ApplicationEngineEnvironmentKt.applicationEngineEnvironment(ApplicationEngineEnvironment.kt:48)
        at io.ktor.server.engine.EmbeddedServerKt.embeddedServer(EmbeddedServer.kt:92)
        at io.ktor.server.engine.EmbeddedServerKt.embeddedServer(EmbeddedServer.kt:65)
        at io.ktor.server.engine.EmbeddedServerKt.embeddedServer(EmbeddedServer.kt:40)
        at io.ktor.server.engine.EmbeddedServerKt.embeddedServer$default(EmbeddedServer.kt:32)
        at maestro.studio.MaestroStudio.start(MaestroStudio.kt:21)
        at maestro.cli.command.StudioCommand.call$lambda$0(StudioCommand.kt:77)
        at maestro.cli.session.MaestroSessionManager.newSession(MaestroSessionManager.kt:129)

This is because ktor 3.x.x is getting resolved transitively.

Testing

Locally using maestro studio command

Issues fixed

[herval]

The version on backend is 2.3.5, as per gradle deps, no?