Update graphql-toolkit monorepo to v0.10.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@graphql-toolkit/file-loading	dependencies	patch	0.10.2 -> 0.10.3
@graphql-toolkit/schema-merging	dependencies	patch	0.10.2 -> 0.10.3

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Release Notes

ardatan/graphql-toolkit

### [`v0.10.3`](https://togithub.com/ardatan/graphql-toolkit/releases/v0.10.3) [Compare Source](https://togithub.com/ardatan/graphql-toolkit/compare/v0.10.2...v0.10.3) > Do you want The Guild to keep your codebase up to date and run your build on each GraphQL Toolkit commit so we will make sure not to break your app? > Contact us here: [the-guild.dev/connected-build](http://bit.ly/connected-toolkit) > Chat with us [on discord](http://bit.ly/guild-chat) List of changes: - Update dependencies - Fixes issues with `graphql-import` and multiple root types ([#​548](https://togithub.com/ardatan/graphql-toolkit/pull/548))

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