Update koin to v4.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
io.insert-koin:koin-logger-slf4j (source)	4.2.0 → 4.2.1
io.insert-koin:koin-ktor (source)	4.2.0 → 4.2.1

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Release Notes

InsertKoinIO/koin (io.insert-koin:koin-logger-slf4j)

v4.2.1: Koin 4.2.1

Compare Source

Support for Compile Safety with Koin Compiler 1.0.0-RC1

• Koin Compiler Plugin 1.0.0-RC1 - https://github.com/InsertKoinIO/koin-compiler-plugin/releases/tag/1.0.0-RC1

Bug Fixes

• Fix stacked-params lookup on linked scopes (#​2387) — The 4.2.0 resolver rewrite (CoreResolverV2) walked linked scopes but dropped the per-parent stacked-parameters check that 4.1.x performed via recursion. This broke patterns where AndroidParametersHolder is stacked on the factory scope by KoinViewModelFactory and SavedStateHandle is then resolved from a child ViewModel scope. Linked-scope resolution now also checks stacked params on each parent scope.

• Restore ABI compatibility for runOnKoinStarted (#​2391) — The 4.2.0 release inadvertently broke binary compatibility for runOnKoinStarted on JVM. Fixed by restoring the original JVM class name via @JvmName/@JvmMultifileClass annotations.

• Fix scope _closed concurrency issue (#​2389) — The Scope._closed flag was not volatile, which could cause stale reads under concurrent access.

Improvements

• Improved Scope resolution error messages — CoreResolverV2 now provides clearer error messages when scope resolution fails, making it easier to diagnose misconfigured scopes.

• Added apiCheck to CI — Binary compatibility validation (kotlinx.binary-compatibility-validator) now runs on every PR to prevent future ABI breaks.

Documentation

• parametersOf type-collision warning (#​2328) — Added a caution note explaining that when a value passed via parametersOf has the same type as the requested definition, Koin returns the value directly and skips the factory block. Suggests using a wrapper type as a workaround.

Contributors

Thanks to the following contributors for this release:

• @​arnaudgiuliani (Arnaud Giuliani)
• @​inemtsev (Ilya Nemtsev) — fix for scope closed concurrency issue (#​2389)

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