Which area/kind this issue is related to?

/area alizer

Issue Description

At the moment alizer is using the io/ioutil in order to read files. As it is mentioned:

"io/ioutil" has been deprecated since Go 1.19: As of Go 1.16, the same functionality is now provided
by package io or package os, and those implementations should be preferred in new code. See the
specific function documentation for details

As a result, we shall replace this dependency and start using the os library.

Acceptance Criteria

• Remove the io/ioutils dependency and replace it with a non-deprecated one.
• Enforce the package is not used in the future using linter (run the linter into CI)