fix(deps): update dependency com.velocitypowered:velocity-api to v3.5.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.velocitypowered:velocity-api (source)	3.4.0 → 3.5.1

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[CarmJos]

Platform API dependencies (Spigot / Paper / Purpur / Velocity, etc.) are intentionally locked to the target server version and must not be updated by dependency bots. Closing this PR; the bot configuration (renovate.json / dependabot.yml) has been updated to ignore these packages so they will not be proposed again.