feat: Remove support for Java 8 # (#55)

* chore: add vscode to the gitignore

* fix: remove deprecated java.level property

* feta: bump JEnkins core to 2.346.2

* Update pom.xml

Co-authored-by: Jesse Glick <jglick@cloudbees.com>

* fix: compile for JDK 11

* Update pom.xml

Co-authored-by: James Nord <jtnord@users.noreply.github.com>

* chore: bump version to 2.x.x

Co-authored-by: Jesse Glick <jglick@cloudbees.com>
Co-authored-by: James Nord <jtnord@users.noreply.github.com>

.gitignore

@@ -11,4 +11,5 @@ target
 .settings
 
 work
-bin
+bin
+.vscode

Jenkinsfile

@@ -1,2 +1,5 @@
 // Builds a module using https://github.com/jenkins-infra/pipeline-library
-buildPlugin(platforms: ['linux'])
+buildPlugin(
+        configurations: [
+                [platform: 'linux', jdk: '11']
+        ])

pom.xml

@@ -48,11 +48,11 @@
   </scm>
 
     <properties>
-        <revision>1</revision>
+        <revision>2</revision>
         <changelist>999999-SNAPSHOT</changelist>
         <gitHubRepo>jenkinsci/trilead-api-plugin</gitHubRepo>
-        <jenkins.version>2.319</jenkins.version>
-        <java.level>8</java.level>
+        <jenkins.version>2.361</jenkins.version>
+        <hpi.compatibleSinceVersion>2.0.0</hpi.compatibleSinceVersion>
     </properties>
 
     <repositories>
@@ -73,8 +73,8 @@
       <dependencies>
         <dependency>
           <groupId>io.jenkins.tools.bom</groupId>
-          <artifactId>bom-2.319.x</artifactId>
-          <version>1508.v4b_d09ff0e893</version>
+          <artifactId>bom-2.361.x</artifactId>
+          <version>1595.v8c71c13cc3a_9</version>
           <type>pom</type>
           <scope>import</scope>
         </dependency>