adafruit_tm1814 always updates

See https://forums.adafruit.com/viewtopic.php?t=219908

The `adafruit_tm1814` is always detected as needing an update. This is _probably_ a library problem, but maybe circup should notice something.

```sh
(.py) halbert@cod:~$ circup update --all
Found device feather_nrf52840_express at /media/halbert/CIRCUITPY, running CircuitPython 10.0.0-beta.2.
Found 1 module[s] needing update.
Updated adafruit_tm1814
Checking 1 updated module[s] for missing requirements.
Ready to install: []

(.py) halbert@cod:~$ circup update --all
Found device feather_nrf52840_express at /media/halbert/CIRCUITPY, running CircuitPython 10.0.0-beta.2.
Found 1 module[s] needing update.
Updated adafruit_tm1814
Checking 1 updated module[s] for missing requirements.
Ready to install: []
```

Reproduce the issue with `circup update --all` on the reported device and the `adafruit_tm1814` module, then compare the first and second runs. Start by tracing how circup decides a module needs updating; done means a second update reports no modules needing updates when the installed module is current.

Written by the indexing model from the issue text.