Drop python 3.7 & 3.8 support

[spoorcc]

Both are EOL >6 months

Description by Korbit AI

What change is being made?

Drop Python 3.7 and 3.8 support across CI, packaging, and dependencies; update the code climate checker image to Python 3.13; remove legacy conditional dependencies and simplify resource imports; update changelog and metadata accordingly.

Why are these changes being made?

Align the project with Python 3.9+ baseline and simplify maintenance by removing outdated support and conditional compatibility logic; reflect the new minimum Python version across tooling and packaging.

Is this description stale? Ask me to generate a new description by commenting /korbit-generate-pr-description

[korbit-ai]

I've completed my review and didn't find any issues... but I did find this frog.

           .--._.--.
          ( O     O )
          /   . .   \
         .`._______.'.
        /(           )\
      _/  \  \   /  /  \_
   .~   `  \  \ /  /  '   ~.
  {    -.   \  V  /   .-    }
_ _`.    \  |  |  |  /    .'_ _
>_       _} |  |  | {_       _<
 /. - ~ ,_-'  .^.  `-_, ~ - .\
         '-'|/   \|`-`

Files scanned

​

File Path	Reviewed
dfetch/resources/init.py	✅
dfetch/reporting/check/code_climate_reporter.py	✅

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