Update plugin parent POM and BOM (jenkinsci#514)

Author: basil

pom.xml

@@ -27,7 +27,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.38</version>
+    <version>4.40</version>
     <relativePath />
   </parent>
 
@@ -56,7 +56,7 @@
   </developers>
 
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
-    <connection>scm:git:git://github.com/${gitHubRepo}.git</connection>
+    <connection>scm:git:https://github.com/${gitHubRepo}.git</connection>
     <developerConnection>scm:git:git@github.com:${gitHubRepo}.git</developerConnection>
     <url>https://github.com/${gitHubRepo}</url>
     <tag>${scmTag}</tag>
@@ -75,7 +75,7 @@
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
         <artifactId>bom-2.332.x</artifactId>
-        <version>1198.v387c834fca_1a_</version>
+        <version>1289.v5c4b_1c43511b_</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
@@ -84,16 +84,6 @@
         <artifactId>jenkins-test-harness-tools</artifactId>
         <version>2.2</version>
       </dependency>
-      <dependency>
-        <groupId>org.hamcrest</groupId>
-        <artifactId>hamcrest</artifactId>
-        <version>2.2</version>
-      </dependency>
-      <dependency>
-        <groupId>org.jenkins-ci.plugins</groupId>
-        <artifactId>pipeline-milestone-step</artifactId>
-        <version>100.v60a_03cd446e1</version>
-      </dependency>
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>copyartifact</artifactId>
@@ -139,7 +129,6 @@
     <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/pipeline-model-definition-plugin</gitHubRepo>
     <jenkins.version>2.332.1</jenkins.version>
-    <java.level>8</java.level>
     <groovy.version>2.4.12</groovy.version>
   </properties>