There's a closed pull request on the void-packages repository

[ci skip] zxing-cpp: update to 2.0.0.
https://github.com/void-linux/void-packages/pull/42335

Description:
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#### Testing the changes
- I tested the changes in this PR: **NO**

@Johnnynator

I can move the unrelated template changes into another PR if so you prefer.

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