Fix sha512 checksum for NPM dependency cdav-library (Fixes: #2362)

[mejo-]

The sha512 checksum for cdav-library commit 0d82618 in
package-lock.json was wrong.

[codecov]

Codecov Report

Merging #2363 (66c5ccf) into master (b8dc17d) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #2363   +/-   ##
=========================================
  Coverage     69.25%   69.25%           
  Complexity      246      246           
=========================================
  Files            22       22           
  Lines           696      696           
=========================================
  Hits            482      482           
  Misses          214      214           

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[mejo-]

I was able to track down the issue to the NPM version being installed: with NPM 7.7.0 or newer installed, the existing integrity checksum is calculated, with NPM 7.6.4 or older, the other one. I suspect the change regarding npm publish in NPM 7.7.0 to be the reason for this.

In other words, there's no problem with the package-lock.json as it is right now, but it requires NPM >= 7.7.0. Sorry for the noise.

I's always so much fun (not!) to debug the toolchain only to realize that something backwards-incompatible changed "somewhere" 😢