ci: force reupload with clobber, and sign a copy of the source archives

[braindigitalis]

Improves code signing as some idiot at github decided to make artifacts not immutable.

https://github.blog/2023-02-21-update-on-the-future-stability-of-source-code-archives-and-hashes/

• My pull request is made against the dev branch.
• I have ensured that the changed library can be built on your target system. I did not introduce any platform-specific code.
• I have ensured that all methods and functions are fully documented using doxygen style comments.
• I tested my commits, by adding a test case to the unit tests if needed
• I have ensured that I did not break any existing API calls.
• My code follows the coding style guide (if you are not sure, match the code style of existing files including indent style etc).
• I have not built my pull request using AI, a static analysis tool or similar without any human oversight. Where I have generated this pull request using a tool, I have justified why this is needed.

[netlify]

✅ Deploy Preview for dpp-dev ready!

Name	Link
🔨 Latest commit	4299e3f
🔍 Latest deploy log	https://app.netlify.com/sites/dpp-dev/deploys/64e40fe9f81ff3000891c3b9
😎 Deploy Preview	https://deploy-preview-792--dpp-dev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.