Replacing deprecated 'pkg_resources' with 'importlib.resources'

[lpascal-ledger]

This was the cause of these annoying yellow warnings when running tests with Ragger or Speculos:

============================================================================ warnings summary =============================================================================
../../../.virtualenvs/ragger/lib/python3.10/site-packages/speculos/api/api.py:3
  /home/lpascal/.virtualenvs/ragger/lib/python3.10/site-packages/speculos/api/api.py:3: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
    import pkg_resources

../../../.virtualenvs/ragger/lib/python3.10/site-packages/pkg_resources/__init__.py:2832
  /home/lpascal/.virtualenvs/ragger/lib/python3.10/site-packages/pkg_resources/__init__.py:2832: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google')`.
  Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
    declare_namespace(pkg)

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=============================================================== 1 passed, 6 deselected, 2 warnings in 2.97s ===============================================================

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 52.12%. Comparing base (a5db170) to head (826f066).

Files	Patch %	Lines
speculos/main.py	57.14%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #479      +/-   ##
==========================================
- Coverage   52.12%   52.12%   -0.01%     
==========================================
  Files         120      120              
  Lines       12028    12026       -2     
  Branches      964      964              
==========================================
- Hits         6270     6268       -2     
  Misses       5423     5423              
  Partials      335      335              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.