fix: field 'tool_calls' is required for type with serial name 'submit_tool_outputs', but it was missing

[voqaldev]

Q	A
Bug fix?	yes

Describe your change

Fixes Field 'tool_calls' is required for type with serial name 'submit_tool_outputs', but it was missing. API states that required action is the parent object:

[aallam]

Nice catch! I think we can make it future proof (for new tools later) by having something like this (based on openapi spec):

/**
 * Details on the action required to continue the run.
 */
@BetaOpenAI
@Serializable
public sealed interface RequiredAction {

    @Serializable
    @SerialName("submit_tool_outputs")
    public class SubmitToolOutputs(
        /**
         * A list of the relevant tool calls.
         */
        @SerialName("submit_tool_outputs") public val toolOutputs: ToolOutputs,
    ) : RequiredAction
}

/**
 * Details on the tool outputs needed for this run to continue.
 */
@Serializable
public data class ToolOutputs(
    /**
     * A list of the relevant tool calls
     */
    @SerialName("tool_calls") val toolCalls: List<ToolCall>
)

[aallam]

Nice! thanks again for your contribution!