WWW: Republish selected blog posts

We should republish selected blog posts from the current aboutcode.org website. For each post we will want to review the content and update it since most are from 2023 or earlier.

Some candidates are:
- [x] P1 https://aboutcode.org/2023/purl-universal-software-package-identification/
- [x] P1https://aboutcode.org/2023/non-vulnerable-dependency-resolution/
- [x] P1 https://aboutcode.org/2023/curated-licenses-public-database-scancode-licensedb/
- [x] https://aboutcode.org/2023/what-is-a-dual-license-anyway/
- [x] https://aboutcode.org/2022/software-versioning/
- [x] https://aboutcode.org/2022/scancode-license-clarity-scoring/
- [ ] https://aboutcode.org/2023/update-copyright-each-new-year/
- [x] PI https://aboutcode.org/2021/copyleft_licensed_software_java_app/
- [ ] https://aboutcode.org/2020/snippet-matching-for-software-provenance-analysis/
- [ ] https://aboutcode.org/2016/software-dependencies-guide/
- [ ] https://aboutcode.org/2013/datatables-and-healthcare-gov-oss-attribution-case-study/ - keep as-is for historical context as our first blog post?

This list represents about half of the historical posts. If we do not modify the content I suppose that we can/should (?) keep the original publication date.
I did not include any posts related to Open Source Stack Exchange.