build: update node and npm engines versions

[nextcloud-command]

Automated update of the npm and node engines versions according to Nextcloud standards.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.51%. Comparing base (f72ed43) to head (f52f2a4).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7581   +/-   ##
=======================================
  Coverage   53.51%   53.51%           
=======================================
  Files         502      502           
  Lines       43509    43509           
  Branches     1131     1131           
=======================================
  Hits        23282    23282           
  Misses      20118    20118           
  Partials      109      109           

☔ 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.