Update zstd-jni to 1.5.6-8 (#18)

📦 Updates [com.github.luben:zstd-jni](https://github.com/luben/zstd-jni)
from `1.5.6-7` to `1.5.6-8`

📜 [GitHub Release
Notes](https://github.com/luben/zstd-jni/releases/tag/v1.5.6-8) -
[Version
Diff](luben/zstd-jni@v1.5.6-7...v1.5.6-8)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

build.sbt

@@ -6,7 +6,7 @@ val V = new {
   val lz4 = "1.8.0"
   val zio = "2.1.13"
   val zip4j = "2.11.5"
-  val zstdJni = "1.5.6-7"
+  val zstdJni = "1.5.6-8"
 }
 
 val _scala212 = "2.12.20"