Outbound Calls in Apollo Server are getting hanged indefinitely
We are trying to send a `gRPC` call from our apollo server resolvers. The call however, never gets sent to the other service we are trying to hit and neither returns success nor error. It works fine for few days and hangs indefinitely after the `gRPC` request is made from the apollo server resolvers.

We also have REST APIs running in the same server using `express` and those work fine for outbound calls. 

### Intended Outcome 
When we make a `gRPC` call from our `apollo server`, then the call should be made and successfully fetch a response from the service.

### Actual Outcome
When we make a `gRPC` call from our `apollo server`, then the call is getting hung indefinitely.

**Apollo server version - `2.21.1`**
**Node version - `14.20.1`**

Below is the code snippet

```ts
const healthCheckClient = new HealthClient(
  "<url>",
  grpc.credentials.createSsl(),
  { 'grpc.enable_http_proxy': 0, 'grpc.keepalive_timeout_ms': grpc_timeout },
);

export function healthCheckAPI(
  meta: grpc.Metadata,
): Promise<any> {
  {
    const health_check = new HealthCheckRequest();
    health_check.setService('');
    return new Promise((resolve, reject) => {
      try {
        
        healthCheckClient.check(
          health_check,
          meta,
          (
            err: grpc.ServiceError | null,
            result: HealthCheckResponse,
          ) => {
            if (err) {
              reject(handleError(err));
            } else {
              resolve(result);
            }
            
          },
        );
      } catch (e: any) {
        reject(handleError(e));
      }
    });
  }
}
```

And the `gRPC` debug logs

```
2023-02-04T03:39:02.967Z | call_stream | [389645] Sending metadata
2023-02-04T03:39:02.968Z | channel | Pick result: QUEUE subchannel: undefined status: undefined undefined
2023-02-04T03:39:02.968Z | call_stream | [389645] write() called with message of length 72
2023-02-04T03:39:02.968Z | call_stream | [389645] end() called
2023-02-04T03:39:02.968Z | call_stream | [389645] deferring writing data chunk of length 77
```
