chore: update default ruleset to 1.15.0 (#141)

Updated default ruleset to 1.15.0.

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Co-authored-by: Romain Marcadier <[email protected]>
Co-authored-by: dd-k9-library-go[bot] <214463715+dd-k9-library-go[bot]@users.noreply.github.com>

Author: dd-k9-library-go[bot]