release: v0.6.0

[mniestroj]

See CHANGELOG.md for details.

Depends on:

• https://github.com/golioth/golioth-zephyr-sdk/pull/350
• https://github.com/golioth/golioth-zephyr-sdk/pull/351
• https://github.com/golioth/golioth-zephyr-sdk/pull/353

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 0b36de5):

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