Update testing matrix for supported packages.

[umaannamalai]

This PR removes unsupported package versions from the tox testing matrix.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	bandit	4		0	5.37s
✅ PYTHON	black	4	0	0	0.9s
✅ PYTHON	flake8	4		0	0.46s
✅ PYTHON	isort	4	0	0	0.22s
✅ PYTHON	pylint	4		0	4.74s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

MegaLinter is graciously provided by

[codecov-commenter]

Codecov Report

Merging #904 (dbe53e1) into main (e371b02) will decrease coverage by 0.07%.
The diff coverage is 77.77%.

@@            Coverage Diff             @@
##             main     #904      +/-   ##
==========================================
- Coverage   81.41%   81.34%   -0.07%     
==========================================
  Files         186      186              
  Lines       18728    18688      -40     
  Branches     3289     3267      -22     
==========================================
- Hits        15247    15202      -45     
- Misses       2539     2547       +8     
+ Partials      942      939       -3     

Files Changed	Coverage Δ
newrelic/hooks/logger_loguru.py	87.50% <ø> (+0.13%)	⬆️
newrelic/hooks/messagebroker_pika.py	93.50% <ø> (-1.52%)	⬇️
newrelic/hooks/framework_bottle.py	79.03% <68.75%> (-2.45%)	⬇️
newrelic/hooks/framework_pyramid.py	82.02% <90.90%> (-0.78%)	⬇️

... and 3 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[lrafeei]

Should we add no-coverage flags in the parts of the code that support instrumentation for unsupported frameworks (in some cases, functions that have been removed/deprecated and no longer used in supported versions)? This way, coverage numbers do not fall, and we do not actually remove existing code