Use parent pom 4.74

Author: MarkEWaite

pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>4.73</version>
+        <version>4.74</version>
         <relativePath />
     </parent>
     <artifactId>docker-workflow</artifactId>