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

https://github.com/tornaria/void-packages giac
https://github.com/void-linux/void-packages/pull/44626

giac: update to 1.9.0.55.
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#### Testing the changes
- I tested the changes in this PR: **briefly**

Tested with sagemath testsuite.

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A patch file from https://github.com/void-linux/void-packages/pull/44626.patch is attached