Add missing Gemini FinishReason values

Author: sberyozkin

model-providers/google/gemini/gemini-common/runtime/src/main/java/io/quarkiverse/langchain4j/gemini/common/GenerateContentResponse.java

@@ -33,6 +33,10 @@ public enum FinishReason {
         BLOCKLIST,
         PROHIBITED_CONTENT,
         SPII,
-        MALFORMED_FUNCTION_CALL
+        MALFORMED_FUNCTION_CALL,
+        IMAGE_SAFETY,
+        UNEXPECTED_TOOL_CALL,
+        TOO_MANY_TOOL_CALLS
+
     }
 }