Require Jenkins 2.401.3 or newer (#368)

pom.xml

@@ -66,7 +66,7 @@
     <revision>0</revision>
     <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/google-kubernetes-engine-plugin</gitHubRepo>
-    <jenkins.version>2.387.3</jenkins.version>
+    <jenkins.version>2.401.3</jenkins.version>
     <google.api.version>1.25.0</google.api.version>
     <google.http.version>1.42.2</google.http.version>
     <cloudresourcemanager.revision>572</cloudresourcemanager.revision>
@@ -79,8 +79,8 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.387.x</artifactId>
-        <version>2465.va_e76ed7b_3061</version>
+        <artifactId>bom-2.401.x</artifactId>
+        <version>2671.va_73a_b_4c103fb_</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -159,7 +159,7 @@
     <dependency>
       <groupId>com.google.http-client</groupId>
       <artifactId>google-http-client-jackson2</artifactId>
-      <version>1.35.0</version>
+      <version>1.43.3</version>
       <exclusions>
         <!-- Provided by jackson2-api plugin -->
         <exclusion>
@@ -233,12 +233,6 @@
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>google-oauth-plugin</artifactId>
-      <exclusions>
-        <exclusion>
-          <groupId>com.google.guava</groupId>
-          <artifactId>guava</artifactId>
-        </exclusion>
-      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>