[BUG] define smallrye version in root pom affect examples and it is a bad idea imo

[yblazart]

Describe the bug
In root pom, in dependency management, smallrye version are fixed.
This versions shoud depend of the target container.
The Quarkus example wasn't not working anymore because it need smallrye-fault-tolerance 6.9
but the dependencies in root pom was 6.7
Currently in PR https://github.com/langchain4j/langchain4j-cdi/pull/47/files there is the version forced to fix that
but for me it's not a good solution.

langchain4j-cdi is based on cdi, not on smallrye and add-ons that use smallrye technologies should be considered as add-ons.
I mean that the version should be specified in the dedicated modules, directly in langchain4j-cdi-fault-tolerance for example.

[TheEliteGentleman]

SmallRye Fault Tolerance should only be added as dependency if the runtime doesn't support Fault Tolerance.

Hence, I've removed it (See PR #61).