feat: replace code-coverage-api plugin by coverage (#822)

* feat: replace `code-coverage-api` plugin by `coverage`

* feat(plugins): removing Cobertura plugin

as per jenkins-infra/helpdesk#3880

as Cobertura had dependency on old code-coverage-api and is not used anymore, let's remove it.

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Co-authored-by: Stéphane MERLE <95630726+smerle33@users.noreply.github.com>

plugins.txt

@@ -42,8 +42,7 @@ cloud-stats:320.v96b_65297a_4b_b_
 cloudbees-bitbucket-branch-source:856.v04c46c86f911
 cloudbees-folder:6.858.v898218f3609d
 cloudbees-jenkins-advisor:358.v58972d19b_1f0
-cobertura:1.17
-code-coverage-api:4.99.0
+coverage:1.7.0
 command-launcher:107.v773860566e2e
 commons-lang3-api:3.13.0-62.v7d18e55f51e2
 commons-text-api:1.11.0-95.v22a_d30ee5d36