Freeze randomx and progpow libraries using tags

[jhelison]

Description

Since now we have the releases for progpow and randomx, we can change the versioning system to use tags.

This will allow us to have a better version control

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Build changes (changes the way the project builds)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Tested by building the projects using cargo

Relevant notes

Tags used:

• https://github.com/EpicCash/progpow-rust/releases/tag/v0.1.0
• https://github.com/EpicCash/randomx-rust