Update reactor.version to v3.8.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
io.projectreactor:reactor-core	3.8.5 → 3.8.6

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Release Notes

reactor/reactor-core (io.projectreactor:reactor-core)

v3.8.6

Compare Source

Reactor Core 3.8.6 is part of the 2025.0.6 Release Train.

What's Changed

✨ New features and improvements

• Bump ByteBuddy from 1.18.8 to 1.18.10 by @​dependabot[bot] in #​4260
• Bump BlockHound from 1.0.16.RELEASE to 1.0.17.RELEASE by @​violetagg in edccbec
• Depend on Micrometer v1.16.6 by @​violetagg in edccbec
• Depend on Micrometer Tracing v1.6.6 by @​violetagg in edccbec

📖 Documentation

• Preserve nullability annotations in Javadoc by @​chemicL in #​4242
• Swap javadoc.io for jspecify.dev for JSpecify links by @​chemicL in #​4251
• Modernize Antora setup by @​chemicL in #​4262
• Fix an outdated link in the Mono class javadoc by @​RenanMarques in #​4206

New Contributors

• @​RenanMarques made their first contribution in #​4206

Full Changelog: reactor/reactor-core@v3.8.5...v3.8.6

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