[Fix JENKINS-58964] Require workflow-cps-global-lib 2.14
[Fix JENKINS-58964] Require workflow-cps-global-lib 2.14

The workflow-global-cps-lib 2.14 API addition to fix JENKINS-43802 needs
to be a minimum requirement for the git plugin, otherwise the git plugin
is not recognized as a modern SCM implementation.

Release 2.14 of workflow-global-cps-lib requires newer versions of
several other dependencies, including:

* credentials 2.1.18
* structs 1.19
* workflow-api 2.33
* workflow-cps 2.71
* workflow-scm-step 2.7
* workflow-step-api 2.20
* workflow-support 3.3

martinda/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,v1v/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,v1v/git-plugin,MarkEWaite/git-plugin,MarkEWaite/git-plugin,martinda/git-plugin,jenkinsci/git-plugin,martinda/git-plugin,v1v/git-plugin