Close #220: prepend "./" to the executable

[anthonydahanne]

Summary

prepend "./" to the generated executable

Checklist

• [x] I have viewed, signed, and submitted the Contributor License Agreement.
• [x] I have linked issue(s) that this PR should close using keywords or the Github UI (See docs)
• [x] I have added an integration test, if necessary.
• [x] I have reviewed the styleguide for guidance on my code quality.
• [x] I'm happy with the commit history on this PR (I have rebased/squashed as needed).

[anthonydahanne]

I additionally created a manual test there: https://github.com/anthonydahanne/spring-boot-demo-arm64/actions/runs/4366044677/jobs/7635509020#step:7:427 updated with latest changes: https://github.com/anthonydahanne/spring-boot-demo-arm64/actions/runs/4366044677/jobs/7668327902#step:7:377

You could see that using the fix from this PR published in anthonydahanne/fix:220, I could obtain a native image with:

[INFO]     [creator]       Process types:
[INFO]     [creator]         native-image: ./com.example.demo.DemoApplication (direct)
[INFO]     [creator]         task:         ./com.example.demo.DemoApplication (direct)
[INFO]     [creator]         web:          ./com.example.demo.DemoApplication (direct)

That runs fine.