Replaced test meta from +junit to +tests

[Graur]

Closes: #127

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PR-Codex overview

This PR updates the eo-math library. It adds test packages, updates dependencies, and fixes some failed tests.

Detailed summary

• Added test packages to each module
• Updated eo-runtime and eo-maven-plugin versions
• Added packageRules in renovate.json to allow specific package versions
• Removed unused junit dependency
• Fixed some failed tests

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[Graur]

@yegor256 Please, have a look

[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 6min)