Quarkus Generator for gradle projects generates broken GitHub-Workflow

[Joniator]

Describe the bug

If you use code.quarkus.io to generate a starter template using gradle instead of maven, it generates a wrong .github/workflows/ci.yml when pushing the project to github.

Expected behavior

It generates a working workflow that builds the application with gradle

Actual behavior

The generated workflow configures the java action to use caching for maven, which fails because the project doesn't contain any pom.xml files.

How to Reproduce?

1. Go to https://code.quarkus.io
2. Select Gradle or Gradle with Kotlin DSL
3. Generate and push to github.

Output of uname -a or ver

No response

Output of java -version

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[quarkus-bot]

/cc @geoand (kotlin), @glefloch, @quarkusio/devtools

[geoand]

cc @gastaldi