There is a new pull request by skmpz against master on the void-packages repository

https://github.com/skmpz/void-packages openvpn-2.6.4
https://github.com/void-linux/void-packages/pull/44132

openvpn: update to 2.6.4.
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#### Testing the changes
- I tested the changes in this PR: **YES**

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A patch file from https://github.com/void-linux/void-packages/pull/44132.patch is attached