Bump it.unimi.dsi:fastutil from 8.5.14 to 8.5.15

Bumps [it.unimi.dsi:fastutil](https://github.com/vigna/fastutil) from 8.5.14 to 8.5.15.
- [Changelog](https://github.com/vigna/fastutil/blob/master/CHANGES)
- [Commits](vigna/fastutil@8.5.14...8.5.15)

---
updated-dependencies:
- dependency-name: it.unimi.dsi:fastutil
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle.kts

@@ -304,7 +304,7 @@ tasks.register<JavaExec>("runLinguaOnConsole") {
 dependencies {
     implementation("com.squareup.moshi:moshi:1.15.1")
     implementation("com.squareup.moshi:moshi-kotlin:1.15.1")
-    implementation("it.unimi.dsi:fastutil:8.5.14")
+    implementation("it.unimi.dsi:fastutil:8.5.15")
 
     testImplementation("org.junit.jupiter:junit-jupiter:5.11.2")
     testImplementation("org.assertj:assertj-core:3.26.3")