Adding false positive rules for Go and pycryptodomex GPL hits

[CsatariGergely]

One for Go, where the GPLv2 licenses is mentioned in the context of GCC and one for pycryptodomex where the GPL license is mentioned in the context of a website.

Tasks

• [X] Reviewed contribution guidelines
• [X] PR is descriptively titled 📑 and links the original issue above 🔗
• [ ] Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR Run tests locally to check for errors.
• [X] Commits are in uniquely-named feature branch and has no merge conflicts 📁
• [X] Updated documentation pages (if applicable)
• [X] Updated CHANGELOG.rst (if applicable)

[CsatariGergely]

In my opinion these are clearly false positives and not license clues. Both of these are talking of the licenses of other things than the code under scan. Adding them to license clues would be confusing.