fix(deps): update dependency dev.langchain4j:langchain4j-bom to v1.8.0

Author: renovate[bot]

build.gradle.kts

@@ -48,7 +48,7 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.9.0")
 
     // langchain4j integrations
-    implementation(platform("dev.langchain4j:langchain4j-bom:1.7.1"))
+    implementation(platform("dev.langchain4j:langchain4j-bom:1.8.0"))
     implementation("dev.langchain4j:langchain4j-open-ai")
     implementation("dev.langchain4j:langchain4j-ollama")
     implementation("dev.langchain4j:langchain4j-vertex-ai-gemini")