Bump actions/setup-java from 1 to 4

[darranl]

Dependabot had a go but additional config appears to be required:

https://github.com/darranl/wildfly-security-testsuite/pull/9

Does the distribution need to be specified?

Run actions/setup-java@v4
  with:
    java-version: [2](https://github.com/darranl/wildfly-security-testsuite/actions/runs/15653064749/job/44102481666#step:3:2)1
    java-package: jdk
    check-latest: false
    server-id: github
    server-username: GITHUB_ACTOR
    server-password: GITHUB_TOKEN
    overwrite-settings: true
    job-status: success
    token: ***
Error: Input required and not supplied: distribution