fix(deps): update dependency org.pf4j:pf4j to v3.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.pf4j:pf4j (source)	3.11.1 -> 3.12.0

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Release Notes

pf4j/pf4j (org.pf4j:pf4j)

### [`v3.12.0`](https://togithub.com/pf4j/pf4j/blob/HEAD/CHANGELOG.md#3120---2024-06-25) [Compare Source](https://togithub.com/pf4j/pf4j/compare/release-3.11.1...release-3.12.0) ##### Fixed - \[[#​576](https://togithub.com/pf4j/pf4j/issues/576)]: Error due to incorrect dependency update after plugin deletion ##### Changed - \[[#​584](https://togithub.com/pf4j/pf4j/issues/584)]: Consolidate demo projects in the 'demo' directory - Upgrade Mockito to 5.2.0 ##### Added - Add PluginClassLoader#isClosed method

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