There is an updated pull request by OliveThePuffin against master on the void-packages repository

https://github.com/OliveThePuffin/void-packages ceres-solver-2.1.0
https://github.com/void-linux/void-packages/pull/45190

ceres-solver: update to 2.1.0
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#### Testing the changes
- I tested the changes in this PR: **YES**|**briefly**|**NO**
YES


#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - aarch64-musl (cross-built on x86_64-glibc)



A patch file from https://github.com/void-linux/void-packages/pull/45190.patch is attached