Update npm and node engines versions

[nextcloud-command]

Automated update of the npm and node engines versions

[codecov[bot]]

Codecov Report

Merging #2059 (0b6ecce) into master (a1951ef) will not change coverage. The diff coverage is n/a.

:exclamation: Current head 0b6ecce differs from pull request most recent head 20cd2b4. Consider uploading reports for the commit 20cd2b4 to get more accurate results

@@            Coverage Diff            @@
##             master    #2059   +/-   ##
=========================================
  Coverage     29.15%   29.15%           
  Complexity       41       41           
=========================================
  Files            69       69           
  Lines          2994     2994           
  Branches        667      667           
=========================================
  Hits            873      873           
  Misses         2121     2121