compile error about helidon-nima-example

[giuliohome]

Solved by upgrading mvn as described here:
https://www.atlantic.net/dedicated-server-hosting/how-to-install-apache-maven-on-fedora/

[INFO] --- compiler:3.8.1:testCompile (default-testCompile) @ example-nima-reactive ---
[INFO] No sources to compile
[INFO] 
[INFO] --- surefire:3.0.0-M5:test (default-test) @ example-nima-reactive ---
[INFO] No tests to run.
[INFO] 
[INFO] --- dependency:3.0.0:copy-dependencies (copy-libs) @ example-nima-reactive ---
[INFO] 
[INFO] --- jar:3.0.2:jar (default-jar) @ example-nima-reactive ---
[INFO] Building jar: /run/media/giulio/TOSHIBA EXT/giulio/dev/helidon-nima-example/reactive/target/example-nima-reactive.jar
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for Helidon Standalone Example Project 1.0.0-SNAPSHOT:
[INFO] 
[INFO] Helidon Standalone Example Project ................. SUCCESS [  3.738 s]
[INFO] Helidon Nima Example ............................... SUCCESS [ 20.675 s]
[INFO] Helidon Reactive Example ........................... SUCCESS [  5.353 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  30.208 s
[INFO] Finished at: 2023-11-04T21:03:38+01:00
[INFO] ------------------------------------------------------------------------
[giulio@fedora helidon-nima-example]$