`cloudflared update` exits with 11 instead of 64

## Problem

Our ansible role for managing cloudflared expects the `cloudflared update` command to exit with code 64 when an update occurs. However recently the tool is now exiting with 11.

Where does 64 come from? The help indicates it should be 64:

```
NAME:
cloudflared update - Update the agent if a new version exists

USAGE:
cloudflared update [command options] [arguments...]

DESCRIPTION:
Looks for a new version on the official download server.
If a new version exists, updates the agent binary and quits.
Otherwise, does nothing.

To determine if an update happened in a script, check for error code 64.

OPTIONS:
--beta specify if you wish to update to the latest beta version (default: false)
--version value specify a version you wish to upgrade or downgrade to
--help, -h show help (default: false)
```

## Reproduce

Install an older version of cloudflared, then run `cloudflared update` and check the exit code.

### Actual Result

The exit code is 11

## Expected Result

An exit code of 64