software/jstestnode: use https protocol to install from github

This prevents errors like:

Error while executing:
/srv/slapgrid/slappart54/t/dau/shared/git/f7efae57344573a59b9e441431a34e9a/bin/git ls-remote -h -t git://github.com/qunitjs/node-qunit.git

fatal: remote error:
  The unauthenticated git protocol on port 9418 is no longer supported.
Please see https://github.blog/2021-09-01-improving-git-protocol-security-github/ for more information.
23 jobs for beremiz in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Master.Python2

00:11:56

passed SlapOS.Eggs.UnitTest-Master.Python3

00:13:25

passed SlapOS.SlapRunner.ResilienceTest-Master

00:24:17

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

01:31:11

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

05:28:33

passed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

05:14:14

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

10:00:31

passed SlapOS.Eggs.UnitTest-Master.Python2

00:11:51

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:31

passed SlapOS.Eggs.UnitTest-Master.Python2

00:16:19

passed SlapOS.Eggs.UnitTest-Master.Python3

00:20:30

passed SlapOS.Eggs.UnitTest-Master.Python3

00:12:14

passed SlapOS.Eggs.UnitTest-Master.Python3

00:25:38

passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:10

passed SlapOS.SlapRunner.ResilienceTest-Master

00:22:48

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:06

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:58

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

01:30:57

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

01:30:37

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

01:30:56

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

05:14:21

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

04:52:35