Update Jenkins repository key URLs. (#808)

* Update Jenkins repository key URLs.

The repository signing keys for the Jenkins apt and rpm repositories
have been rotated and the new signing keys are available at a separate
URL from the previous ones.

As of 2023-06-19 the previous keys are no longer available and the URLs
used prior to this patch 404 so I do not think there is an advantage to
making this change conditional.

Background on the Jenkins repository change is here: https://www.jenkins.io/blog/2023/03/27/repository-signing-keys-changing/

* Add changelog entry.

---------

Co-authored-by: Dan Webb <[email protected]>

CHANGELOG.md

@@ -4,6 +4,8 @@ This file is used to list changes made in each version of the jenkins cookbook.
 
 ## Unreleased
 
+Update Jenkins apt/rpm repository key urls.
+
 ## 9.5.18 - *2023-09-28*
 
 ## 9.5.17 - *2023-09-28*

attributes/master.rb

@@ -251,13 +251,13 @@
   master['repository_name'], master['repository'], master['repository_key'] =
     case [node['platform_family'], node['jenkins']['master']['channel']]
     when %w(debian stable)
-      ['jenkins-ci-stable', 'https://pkg.jenkins.io/debian-stable', 'https://pkg.jenkins.io/debian-stable/jenkins.io.key']
+      ['jenkins-ci-stable', 'https://pkg.jenkins.io/debian-stable', 'https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key']
     when %w(rhel stable), %w(amazon stable)
-      ['jenkins-ci-stable', 'https://pkg.jenkins.io/redhat-stable', 'https://pkg.jenkins.io/redhat-stable/jenkins.io.key']
+      ['jenkins-ci-stable', 'https://pkg.jenkins.io/redhat-stable', 'https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key']
     when %w(debian current)
-      ['jenkins-ci-current', 'https://pkg.jenkins.io/debian', 'https://pkg.jenkins.io/debian/jenkins.io.key']
+      ['jenkins-ci-current', 'https://pkg.jenkins.io/debian', 'https://pkg.jenkins.io/debian/jenkins.io-2023.key']
     when %w(rhel current), %w(amazon current)
-      ['jenkins-ci-current', 'https://pkg.jenkins.io/redhat', 'https://pkg.jenkins.io/redhat/jenkins.io.key']
+      ['jenkins-ci-current', 'https://pkg.jenkins.io/redhat', 'https://pkg.jenkins.io/redhat/jenkins.io-2023.key']
     end
 
   #