Improved execution of grouped assertions

[eas5]

Problem:
A test method with many individual assertions stops being executed on the first failed assertion, which prevents the remaining ones' execution.

Solution:
Using JUnit's grouped assertions feature, all assertions are executed, and all failures will be reported together. In this refactoring, no original assertion was changed.

Result:
Before:

assertEquals("io.quarkus.agroal", Capability.AGROAL.getName());
assertEquals("io.quarkus.security.jpa", Capability.SECURITY_JPA.getName());
assertEquals("io.quarkus.container.image.docker", Capability.CONTAINER_IMAGE_DOCKER.getName());

After:

assertAll(
        () -> assertEquals("io.quarkus.agroal", Capability.AGROAL.getName()),
        () -> assertEquals("io.quarkus.security.jpa", Capability.SECURITY_JPA.getName()),
        () -> assertEquals("io.quarkus.container.image.docker", Capability.CONTAINER_IMAGE_DOCKER.getName())
);

[gsmet]

It's indeed a good idea.