Add support for Python 3.14

[hugovk]

Also add colour to CI logs for readability, suppress a pip warning and bump GitHub Actions.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.97%. Comparing base (efb2043) to head (11ff2c2).
⚠️ Report is 45 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #268      +/-   ##
==========================================
- Coverage   95.21%   94.97%   -0.25%     
==========================================
  Files           2        2              
  Lines        1819     1909      +90     
  Branches      177      177              
==========================================
+ Hits         1732     1813      +81     
- Misses         43       52       +9     
  Partials       44       44              

Flag	Coverage Δ
unittests	94.76% <ø> (-0.41%)	⬇️

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

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[vsajip]

@hugovk I merged these changes, but my version of `tox

4.32.0 from /disk2/vinay/.local/share/virtualenvs/tox/lib/python3.10/site-packages/tox/init.py

doesn't seem happy with the envlist syntax you introduced with the curly braces. What version of tox are you using?

[hugovk]

I have the same version, and I can reproduce: ValueError: py{27

tox doesn't like splitting the {...} over multiple lines.

Two options:

• Remove {...} and prefix every env with py
• Put it in a single line

Which would you prefer?

[vsajip]

I can make the change locally (to single line), I'm making other changes. Thanks.