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

https://github.com/onlylunix/void-packages firebird3upd
https://github.com/void-linux/void-packages/pull/46672

firebird3: update to 3.0.12.33740~da67df2
<!-- Uncomment relevant sections and delete options which are not applicable -->

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

<!--
#### 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**
-->

<!-- Note: If the build is likely to take more than 2 hours, please add ci skip tag as described in
https://github.com/void-linux/void-packages/blob/master/CONTRIBUTING.md#continuous-integration
and test at least one native build and, if supported, at least one cross build.
Ignore this section if this PR is not skipping CI.
-->

#### Local build testing
- I built this PR locally for my native architecture, (x86_64-LIBC, i686-LIBC, x86_64-musl)

New features:
You can now install and run several different versions of Firebird at the same time, including client and development libraries, since the databases require the corresponding server versions.

Made the template unified. Also see Firebird5 PR https://github.com/void-linux/void-packages/pull/48350





A patch file from https://github.com/void-linux/void-packages/pull/46672.patch is attached