chore(deps): downgrade langchain4j to 0.34.0 because of bugs

Refs: langchain4j/langchain4j#1849

Author: Blarc

build.gradle.kts

@@ -100,7 +100,7 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 
     // langchain4j integrations
-    implementation(platform("dev.langchain4j:langchain4j-bom:0.35.0"))
+    implementation(platform("dev.langchain4j:langchain4j-bom:0.34.0"))
     implementation("dev.langchain4j:langchain4j-open-ai")
     implementation("dev.langchain4j:langchain4j-ollama")
     // The Baidu Qianfan Large Model Platform, including the ERNIE series, can be accessed at https://docs.langchain4j.dev/integrations/language-models/qianfan/.