Update module github.com/tidwall/btree to v1.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/tidwall/btree	require	minor	v1.6.0 -> v1.7.0

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Release Notes

tidwall/btree (github.com/tidwall/btree)

### [`v1.7.0`](https://togithub.com/tidwall/btree/compare/v1.6.0...v1.7.0) [Compare Source](https://togithub.com/tidwall/btree/compare/v1.6.0...v1.7.0)

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Configuration

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