Update Rust crate test-log to 0.2.15

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
test-log	dev-dependencies	patch	0.2.14 -> 0.2.15

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Release Notes

d-e-s-o/test-log (test-log)

### [`v0.2.15`](https://togithub.com/d-e-s-o/test-log/blob/HEAD/CHANGELOG.md#0215) [Compare Source](https://togithub.com/d-e-s-o/test-log/compare/v0.2.14...v0.2.15) - Formalized MSRV policy - Bumped minimum supported Rust version to `1.71` - Bumped `env_logger` dependency to `0.11`

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Configuration

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