VS Code does not recognize junit tests

I am following the steps at this page to run Junit5 tests with VS Code and Maven. I have these extensions installed:

and my pom.xml has:

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter</artifactId>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>    
    <scope>test</scope>
</dependency>        

I have put my test classes in src/test/java. but VS Code does not detect JUNIT5 tests. the green "lenses" or "buttons" do not show up next to the tests. In one of the logs I could see:

Preview features enabled at an invalid source release level 21, preview can be enabled only at source level 22; code: 2098258

and not sure if it is because of this.

related: https://github.com/Microsoft/vscode-java-test/issues/470

Start with the reported pom.xml configuration, the tests under src/test/java, and the VS Code Java Test logs containing the preview-feature error. Compare the setup with the linked issue #470 and review the comment thread for the current diagnosis. Done means identifying whether the error explains the missing test lenses and documenting a reproducible resolution.