Bump bdk_kyoto patch release

[rustaceanrob]

Adds a performance improvement and a bug fix.

Checklists

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• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing
• I've added a changelog in the next release tracking issue (see example)
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New Features:

• I've added tests for the new feature
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Bugfixes:

• This pull request breaks the existing API
• I've added tests to reproduce the issue which are now passing
• I'm linking the issue being fixed by this PR

[thunderbiscuit]

Tested ACK 8bfc067.