Update dependency g-plane/pretty_yaml to v0.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
g-plane/pretty_yaml	minor	v0.2.0 -> v0.3.0

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Release Notes

g-plane/pretty_yaml (g-plane/pretty_yaml)

### [`v0.3.0`](https://togithub.com/g-plane/pretty_yaml/releases/tag/v0.3.0) [Compare Source](https://togithub.com/g-plane/pretty_yaml/compare/v0.2.0...v0.3.0) #### Features - **formatter**: optimize whitespaces after colon in block map - **formatter**: add [`trim_trailing_whitespaces`](https://togithub.com/g-plane/pretty_yaml/blob/v0.3.0/docs/config.md#trimtrailingwhitespaces) option

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