Fix some typing warnings

[graepaul]

Summary

• Improve full memory dmidecode for linux.
• Adding a full decode of wmic for windows.
• Improved unit-tests

Here is what a dimm looks like

{
  "dimms": [
    {
      "size_bytes": 103079215104,
      "locator": "CPU0_A",
      "bank_locator": "_Node0_Channel0_Dimm0",
      "manufacturer": "Samsung",
      "part_number": "M321RYGA0PB0-CWMXJ",
      "serial_number": "1234-567889AB",
      "memory_type": "DDR5",
      "form_factor": "DIMM",
      "speed_mts": 5600,
      "configured_speed_mts": 5600,
      "rank": 2,
      "data_width_bits": 64,
      "total_width_bits": 80,
      "size": "96GB"
    },
...

Test plan

• pytest test/unit - Improved unit-tests which now runs against a large fixtures file validating functionality.
• pytest test/functional (if applicable) - N/A
• pre-commit run --all-files

Checklist

• Added/updated tests (or explained why not)
• Updated docs/README if behavior changed
• No secrets or credentials committed