Fix #560 Device with all numeric name cannot be deserialized

[FrankBakkerNl]

Proposed change

fix #560 Device with all numeric name prevents cache from loading

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the [development checklist][dev-checklist]
• The code compiles without warnings (code quality chek)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[codecov-commenter]

Codecov Report

Merging #612 (c9dc4ab) into dev (067de2f) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev     #612      +/-   ##
==========================================
+ Coverage   80.37%   80.44%   +0.06%     
==========================================
  Files         110      110              
  Lines        2889     2889              
  Branches      313      313              
==========================================
+ Hits         2322     2324       +2     
+ Misses        440      439       -1     
+ Partials      127      126       -1     

Flag	Coverage Δ
unittests	80.44% <ø> (+0.06%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...assClient/Common/HomeAssistant/Model/HassDevice.cs	100.00% <ø> (ø)
...lient/Internal/Json/ReadNumberAsStringConverter.cs	54.54% <ø> (ø)
...mon.HassClient/Internal/HomeAssistantConnection.cs	86.66% <0.00%> (+1.90%)	⬆️

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[helto4real]

Should we do a bugfix in v2 repo too?