Bump com.github.luben:zstd-jni from 1.5.2-5 to 1.5.6-4

Bumps [com.github.luben:zstd-jni](https://github.com/luben/zstd-jni) from 1.5.2-5 to 1.5.6-4.
- [Commits](luben/zstd-jni@c1.5.2-5...v1.5.6-4)

---
updated-dependencies:
- dependency-name: com.github.luben:zstd-jni
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -18,7 +18,7 @@ guava = { module = "com.google.guava:guava", version = "33.2.1-jre" }
 reactor-core = { module = "io.projectreactor:reactor-core", version.ref = "reactor" }
 reactor-netty = { module = "io.projectreactor.netty:reactor-netty", version = "1.1.21" }
 luaj-jse = { module = "org.luaj:luaj-jse", version = "3.0.1" }
-zstd-jni = { module = "com.github.luben:zstd-jni", version = "1.5.2-5" } # >=1.5.4-1 fails
+zstd-jni = { module = "com.github.luben:zstd-jni", version = "1.5.6-4" } # >=1.5.4-1 fails
 commons-compress = { module = "org.apache.commons:commons-compress", version = "1.26.2" }
 jsonapi-converter = { module = "com.github.jasminb:jsonapi-converter", version = "0.13" }
 q-builders = { module = "com.github.rutledgepaulv:q-builders", version = "1.6" }