Modernize plugin (#176)

* Modernize plugin

* More updates

.mvn/extensions.xml

@@ -2,6 +2,6 @@
   <extension>
     <groupId>io.jenkins.tools.incrementals</groupId>
     <artifactId>git-changelist-maven-extension</artifactId>
-    <version>1.4</version>
+    <version>1.6</version>
   </extension>
 </extensions>

Jenkinsfile

@@ -1,4 +1,4 @@
-buildPlugin(configurations: [
-    [platform: 'linux', jdk: '8'],
-    [platform: 'windows', jdk: '8']
-], useContainerAgent: true)
+buildPlugin(useContainerAgent: true, configurations: [
+  [platform: 'linux', jdk: 17],
+  [platform: 'windows', jdk: 11],
+])

pom.xml

@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.47</version>
+    <version>4.71</version>
     <relativePath />
   </parent>
 
@@ -71,7 +71,7 @@
 
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
-    <jenkins.version>2.346.1</jenkins.version>
+    <jenkins.version>2.387.3</jenkins.version>
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
   </properties>
 
@@ -92,8 +92,8 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.346.x</artifactId>
-        <version>1607.va_c1576527071</version>
+        <artifactId>bom-2.387.x</artifactId>
+        <version>2278.v47b_4508e256a</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>