try can use automatic resource management in CatchMojo (#2424)

Co-authored-by: Vincent Potucek <[email protected]>

Author: Pankraz76

its/core-it-support/core-it-plugins/maven-it-plugin-context-passing/src/main/java/org/apache/maven/plugin/coreit/CatchMojo.java

@@ -58,23 +58,10 @@ public void execute() throws MojoExecutionException {
 
         File outfile = new File(outDir, value);
 
-        Writer writer = null;
-        try {
-            writer = new FileWriter(outfile);
-
+        try (Writer writer = new FileWriter(outfile)) {
             writer.write(value);
-
-            writer.flush();
         } catch (IOException e) {
             throw new MojoExecutionException("Cannot write output file: " + outfile, e);
-        } finally {
-            if (writer != null) {
-                try {
-                    writer.close();
-                } catch (IOException e) {
-                    // ignore
-                }
-            }
         }
     }
 }