chore: upgrade deps

[stropitek]

Deprecate Node.js 18 and add support for Node.js 22

• chore: upgrade node and CI deps
• chore: remove dotenv and make-promises-safe
• chore: update other deps
• chore: use strict mode
• chore: update react
• chore: upgrade commander
• tests: fix tests setup

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 90.15%. Comparing base (6827c46) to head (ede3659).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/server/middleware/couch.js	50.00%	1 Missing ⚠️
src/util/nanoShim.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #401   +/-   ##
=======================================
  Coverage   90.15%   90.15%           
=======================================
  Files          61       61           
  Lines        7030     7030           
  Branches      820      820           
=======================================
  Hits         6338     6338           
  Misses        689      689           
  Partials        3        3           

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