fix: decode all submodules with the right path

[radeksimko]

Fixes #801

Prior to this patch we would only decode the last submodule in the slice. This was because of a common mistake documented in https://github.com/golang/go/wiki/CommonMistakes#using-reference-to-loop-iterator-variable

i.e. we were passing a reference to the job functions which were executed well after the ranging over the slice was done, hence reusing the same reference, with the reference pointing to the last value in the last iteration.

I believe this was only introduced in the refactoring PR #782 so if we patch it prior to the next release there would be no user affected.

Attached below is the same example as in the original bug report, now working:

[dbanck]

LGTM 👍

[github-actions]

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[github-actions]

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