[Sync] Update project files from source repository (5c903c5)

[mrz1836]

What Changed

• Updated GO_COVERAGE_VERSION from v1.3.1 to v1.3.5 in .github/env/10-coverage.env
• Added return $? statement to the get_script_dir() function in .github/env/load-env.sh
• Updated MAGE_X_VERSION from v1.20.1 to v1.20.4 in .github/env/10-mage-x.env
• Updated MAGE_X_GOLANGCI_LINT_VERSION from v2.8.0 to v2.9.0 in .github/env/10-mage-x.env
• Updated MAGE_X_STATICCHECK_VERSION from 2025.1.1 to 2026.1 in .github/env/10-mage-x.env
• Updated MAGE_X_BENCHSTAT_VERSION from v0.0.0-20260112171951-5abaabe9f1bd to v0.0.0-20260211190930-8161c38c6cdc in .github/env/10-mage-x.env

Why It Was Necessary

• Updating tooling versions ensures the project benefits from latest bug fixes, performance improvements, and security patches
• The return $? addition in load-env.sh improves script reliability by properly propagating the exit status from the directory resolution logic
• Keeping MAGE-X and related linting tools up to date maintains consistency with current best practices and compatibility with Go 1.24.x

Testing Performed

• Verified that environment configuration files maintain valid syntax and formatting
• Confirmed that the shell script change preserves backward compatibility with existing usage patterns
• Validated that updated tool versions are available and compatible with the current CI/CD pipeline configuration

Impact / Risk

• Breaking Change: None - these are dependency version updates that maintain compatibility
• Risk: Low - tool version updates are incremental and within expected semver ranges
• CI/CD Impact: Minimal - updated tools may provide improved performance or additional checks, but should not disrupt existing workflows

[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!