package-lock: preliminary recomputation before updating a dependency
package-lock: preliminary recomputation before updating a dependency

The next commit will update a dependency in package.json. This commit only
refreshes package-lock.json recalculating it at the current date.
In this way we will be sure that any modifications in package-lock.json in the
next commit will be only due to the package.json change.

Should this commit introduce any regression, we would know for certain that one
of our dependencies is not correctly honoring their semver promises.

joequant/etherpad-lite,aptivate/etherpad-lite,ether/etherpad-lite,storytouch/etherpad-lite,joequant/etherpad-lite,storytouch/etherpad-lite,ether/etherpad-lite,storytouch/etherpad-lite,joequant/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite,aptivate/etherpad-lite,aptivate/etherpad-lite,ether/etherpad-lite