fix: Make BecauseResourcesTimeout fatal to fix freestyle lock timeout on Jenkins 2.532+ (#1027)

Jenkins 2.532 (core PR #11173) changed Queue.maintain() to create a new
BlockedItem instead of updating the existing one when canRun() returns a
CauseOfBlockage. This caused the manual Queue.cancel() in
checkFreestyleTimeout() to be immediately undone.

Override isFatal() returning true on BecauseResourcesTimeout so the queue
itself handles the cancellation. Also bump Jenkins baseline to 2.541 (the
next LTS line that includes the isFatal() API) and update BOM accordingly.

Fixes #1026

Author: mPokornyETM

pom.xml

@@ -55,7 +55,7 @@
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-    <jenkins.baseline>2.528</jenkins.baseline>
+    <jenkins.baseline>2.541</jenkins.baseline>
     <jenkins.version>${jenkins.baseline}.3</jenkins.version>
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
     <spotbugs.effort>Max</spotbugs.effort>
@@ -71,7 +71,7 @@
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
         <artifactId>bom-${jenkins.baseline}.x</artifactId>
-        <version>6329.v403d8c87a_5ce</version>
+        <version>6364.v16b_76a_4023c7</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

src/main/java/org/jenkins/plugins/lockableresources/queue/LockableResourcesQueueTaskDispatcher.java

@@ -265,5 +265,15 @@ public String getShortDescription() {
                     + timeoutUnit.toLowerCase(java.util.Locale.ENGLISH)
                     + " waiting for lockable resources";
         }
+
+        /**
+         * Signals that this blockage is fatal and the queue item should be removed.
+         * Since Jenkins 2.532 (core PR #11173), the queue checks this flag and
+         * cancels the item itself instead of re-adding it as a {@code BlockedItem}.
+         */
+        @Override
+        public boolean isFatal() {
+            return true;
+        }
     }
 }