Update dependency com.github.spotbugs:spotbugs to v4.8.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.github.spotbugs:spotbugs (source)	4.8.5 -> 4.8.6

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Release Notes

spotbugs/spotbugs (com.github.spotbugs:spotbugs)

### [`v4.8.6`](https://togithub.com/spotbugs/spotbugs/blob/HEAD/CHANGELOG.md#486---2024-06-17) [Compare Source](https://togithub.com/spotbugs/spotbugs/compare/4.8.5...4.8.6) ##### Fixed - Do not report BC_UNCONFIRMED_CAST for Java 21's type switches when the switch instruction is TABLESWITCH ([#​2782](https://togithub.com/spotbugs/spotbugs/issues/2782)) - Do not throw exception when inspecting empty switch statements ([#​2995](https://togithub.com/spotbugs/spotbugs/issues/2995)) - Adjust priority since relaxed mode reports even `IGNORED_PRIORITY` ([#​2994](https://togithub.com/spotbugs/spotbugs/issues/2994)) - Fix duplicated log4j2 jar in distribution ([#​3001](https://togithub.com/spotbugs/spotbugs/issues/3001))

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