Update plugin com.gradleup.shadow to v9.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.gradleup.shadow	9.5.1 → 9.6.1

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Release Notes

GradleUp/shadow (com.gradleup.shadow)

v9.6.1

Compare Source

Changed

• Use GradleException for expected build failures. (#​2113)

Fixed

• Preserve repeated lines in R8 rule files when using minimize { r8 { ... } }. (#​2115)

v9.6.0

Compare Source

Added

• Extract R8 rules from dependency JARs when using minimize { r8 { ... } }. (#​2089)

Changed

• Rename ShadowDslMarker to ShadowDsl. (#​2091)
• POTENTIALLY BREAKING: Apply @ShadowDsl to ShadowJar, ResourceTransformer, DependencyFilter, and Relocator. (#​2090)
  This restricts nested DSL configuration blocks from implicitly calling outer receiver APIs in Kotlin script files.

Fixed

• Validate ZIP entry names to prevent Zip Slip path traversal.
• Avoid resolving unused R8 dependency. (#​2101)

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