replace String#concat with Array#push to avoid frozen string violation
#582
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Pull Request (PR) description
with Ruby 3.0 strings are frozen by default causing the catalog compiler to throw errors when one of the native corosync module types is used.
this change replaces the use of the string concatenation operator with an array that gets joined into a string for further use.
the functionality and data passed to external systems should remain unchanged, making this change backwards compatible.
This Pull Request (PR) fixes the following issues
n/a