chore(deps): replace mitchellh/mapstructure with go-viper/mapstructure/v2

[Abhishek9639]

Description

Replace the archived mitchellh/mapstructure dependency with the actively maintained go-viper/mapstructure/v2 fork.

Changes:

• Updated the import in loader/loader.go from github.com/mitchellh/mapstructure to github.com/go-viper/mapstructure/v2.
• Updated go.mod to use github.com/go-viper/mapstructure/v2 v2.5.0.
• Ran go mod tidy to update go.sum.

What does this PR do?

mitchellh/mapstructure was archived by the author and is no longer maintained, which means no future bug fixes or security patches. This PR swaps it out for go-viper/mapstructure/v2, which is the maintained fork with the same API.

This is part of the effort tracked in score-spec/score-compose#443.

Types of changes

• New chore (expected functionality to be implemented)

Checklist:

• I've signed off with an email address that matches the commit author.

[Abhishek9639]

Hi @mathieu-benoit,
Just opened the PR for step 1 over at the score-go repo. Let me know if everything looks good there or if any changes are needed before we move to the next step.
Thanks!

[mathieu-benoit]

LGTM, thanks for detailed explanation and the implementation, @Abhishek9639!

[Abhishek9639]

Awesome, thanks. I'll move on to step 2 (score-implementation-sample). Should I wait for a new release of score-go to be cut first so I can bump the dependency, or just point it to the main branch for now?

[mathieu-benoit]

Hi @Abhishek9639, FYI I just updated this ticket there score-spec/score-compose#443 (comment). tl,dr: score-go already released and successfully integrated in score-implementation-sample (Dependabot did the job). You are now good to go to integrate the new score-go version in score-compose 😃

[Abhishek9639]

Got it, thanks for the update. I’ll proceed with integrating the new score-go version into score-compose.