@powersync/op-sqlite React Native 0.81 compatibility

[a11rew]

The current latest version of @powersync/op-sqlite doesn't work in React Native 0.81 on Android. It fails at runtime with Turbomodule errors coming from the op-sqlite dep.

The version of op-sqlite currently used by @powersync/op-sqlite (^14.0.2) is outdated, op-sqlite was updated with RN 0.81 support in 15.0.0. Overriding the version of op-sqlite used by @powersync/op-sqlite to 15.0.7 seems to work without issues so this should likely be a straightforward version bump to fix? Happy to send a PR in for this

[simolus3]

We currently have a peer-dependency on "@op-engineering/op-sqlite": "^13.0.0 || ^14.0.0". Given that we don't seem to be affected by any 15.x changes, changing that to include || ^15.0.0 sounds good to me. You could also bump the dev-dependency on op-sqlite to ensure we're testing with the latest version. A PR for that would definitely be welcome, thanks!