Use jenkins.baseline to reduce bom update mistakes (#80)

Author: strangelookingnerd

pom.xml

@@ -37,7 +37,9 @@
 	</developers>
 
 	<properties>
-		<jenkins.version>2.414.3</jenkins.version>
+		<!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
+		<jenkins.baseline>2.414</jenkins.baseline>
+		<jenkins.version>${jenkins.baseline}.3</jenkins.version>
 	</properties>
 
 	<scm>
@@ -50,7 +52,7 @@
 		<dependencies>
 			<dependency>
 				<groupId>io.jenkins.tools.bom</groupId>
-				<artifactId>bom-2.414.x</artifactId>
+				<artifactId>bom-${jenkins.baseline}.x</artifactId>
 				<version>2982.vdce2153031a_0</version>
 				<scope>import</scope>
 				<type>pom</type>