[Sync] Update project files from source repository (f7546e4)

[mrz1836]

What Changed

• Updated MAGE_X_VERSION from v1.20.16 to v1.21.0
• Updated MAGE_X_BENCHSTAT_VERSION from v0.0.0-20260409210113-8e83ce0f7b1c to v0.0.0-20260512194132-3cf34090a3db

Why It Was Necessary

• Upgrade to the latest mage-x release to incorporate new features and bug fixes
• Update benchstat dependency to a newer commit for improved benchmark statistics functionality
• Keep tooling dependencies current to ensure stability and access to latest improvements

Testing Performed

• Verify CI pipeline executes successfully with updated mage-x version
• Confirm all mage-x tooling commands function correctly with new versions
• Validate that benchstat operations work as expected with the updated commit hash

Impact / Risk

• Risk Level: Low - mage-x is a development tooling dependency that doesn't affect production runtime
• Breaking Changes: None expected - minor version bump should maintain backwards compatibility
• CI Impact: May see improvements or additional features available in mage-x v1.21.0

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mrz1836]

LGTM!