Address todo related to variables provided by cppinterop

[anutosh491]

Description

Please include a summary of changes, motivation and context for this PR.

Check compiler-research/CppInterOp#336 and #166

Variables coming out of cppinterop (CPPINTEROP_CONFIG, CPPINTEROP_DIR etc) were faulty leading to the following message

Found CppInterOp: config= dir= (found version= compatible with Clang 19.x)

Now that these have been fixed in 1.5.0, we have

Found CppInterOp: config=/Users/anutosh491/micromamba/envs/xeus-cpp/lib/cmake/CppInterOp dir=/Users/anutosh491/micromamba/envs/xeus-cpp (found version=1.5.0 compatible with Clang 19.x)

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Added/removed dependencies
• Required documentation updates

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.72%. Comparing base (e638f7c) to head (dba03cb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #201   +/-   ##
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  Coverage   80.72%   80.72%           
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  Files          19       19           
  Lines         970      970           
  Branches       93       93           
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  Hits          783      783           
  Misses        187      187           

[vgvassilev]

Lgtm!