packaging!: Remove unused dependencies pendulum and python-dateutil

[edgarrmondragon]

• pendulum: Closes BREAKING CHANGE: Consider removing usage of pendulum #1858
• python-dateutil

---

📚 Documentation preview 📚: https://meltano-sdk--2520.org.readthedocs.build/en/2520/

[codspeed-hq]

CodSpeed Performance Report

Merging #2520 will not alter performance

_{Comparing edgarrmondragon/chore/remove-deprecated-deps (e65e85a) with main (5eb1235)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.47%. Comparing base (5eb1235) to head (e65e85a).
Report is 125 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2520   +/-   ##
=======================================
  Coverage   89.47%   89.47%           
=======================================
  Files          58       58           
  Lines        4799     4799           
  Branches      937      937           
=======================================
  Hits         4294     4294           
  Misses        352      352           
  Partials      153      153           

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