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

jsoncpp: update to 1.9.5.
https://github.com/void-linux/void-packages/pull/40722

Description:
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#### Testing the changes
- I tested the changes in this PR: **YES**

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#### New package
- This new package conforms to the [package requirements](https://github.com/void-linux/void-packages/blob/master/CONTRIBUTING.md#package-requirements): **YES**|**NO**
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#### Local build testing
- I built all the changed packages for the following architectures:
  - x86_64 (+ tests)
  - i686  (+ tests)
  - aarch64 (cross on x86_64)
  - armv7l (cross on x86_64)
  - x86_64-musl  (+ tests)
  - aarch64-musl (cross on x86_64-musl)
  - armv6l-musl (cross on x86_64-musl)

- Except **sysdig** and **vtk** which are marked nocross, so were built for:
  - x86_64 (+ tests)
  - i686  (+ tests)
  - x86_64-musl  (+ tests)

[ci skip]