Update dependency power_assert to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
power_assert	"< 3.0" → "< 3.1"

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Release Notes

ruby/power_assert (power_assert)

v3.0.1

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What's Changed

• Fix an issue where loading power_assert on CRuby 2.7 caused unintended errors by @​k-tsj in #​62

Full Changelog: ruby/power_assert@v3.0.0...v3.0.1

v3.0.0

Compare Source

What's Changed

• Remove PowerAssert.trace by @​k-tsj in #​55
• Fix test failures on ruby HEAD by @​k-tsj in #​56
• Drop support for ruby < 3.1 by @​k-tsj in #​57
• Support Ruby 3.5 style Set inspection result by @​hsbt in #​58
• Bump actions/checkout from 4 to 5 by @​dependabot[bot] in #​60

Full Changelog: ruby/power_assert@v2.0.5...v3.0.0

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