Update dependency org.jenkins-ci.plugins.workflow:workflow-support to v976

Author: renovate[bot]

test/pom.xml

@@ -137,7 +137,7 @@ THE SOFTWARE.
         <!-- Required by plugin-util-api -->
         <groupId>org.jenkins-ci.plugins.workflow</groupId>
         <artifactId>workflow-support</artifactId>
-        <version>968.v8f17397e87b_8</version>
+        <version>976.vb_d9493c2eb_09</version>
       </dependency>
     </dependencies>
   </dependencyManagement>

war/pom.xml

@@ -354,7 +354,7 @@ THE SOFTWARE.
                   <!-- dependency of checks-api and plugin-util-api -->
                   <groupId>org.jenkins-ci.plugins.workflow</groupId>
                   <artifactId>workflow-support</artifactId>
-                  <version>968.v8f17397e87b_8</version>
+                  <version>976.vb_d9493c2eb_09</version>
                   <type>hpi</type>
                 </artifactItem>