chore(deps): update dependency rollup-plugin-sourcemaps to ^0.6.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rollup-plugin-sourcemaps	devDependencies	patch	^0.6.2 -> ^0.6.3

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Release Notes

maxdavidson/rollup-plugin-sourcemaps

### [`v0.6.3`](https://togithub.com/maxdavidson/rollup-plugin-sourcemaps/blob/master/CHANGELOG.md#​063) [Compare Source](https://togithub.com/maxdavidson/rollup-plugin-sourcemaps/compare/v0.6.2...v0.6.3) - Fix ES module breaking due to not default-importing CommonJS modules - Add some warning messages

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