[Sync] Update project files from source repository (d1c2de1)

[mrz1836]

What Changed

• 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 GO_COVERAGE_VERSION from v1.3.1 to v1.3.5 in .github/env/10-coverage.env
• Added --paginate flag to the gh api command in .github/actions/download-artifact-resilient/action.yml to fetch artifacts list
• Added return $? statement to the get_env_dir function in .github/env/load-env.sh

Why It Was Necessary

• Upgrading mage-x, golangci-lint, and go-coverage tools ensures access to latest bug fixes, performance improvements, and feature updates
• The --paginate flag prevents incomplete artifact lists when GitHub API returns paginated results, improving reliability of artifact downloads
• The return $? ensures proper exit code propagation from the get_env_dir function for better error handling in shell scripts

Testing Performed

• Version updates should be validated by running CI workflows to ensure compatibility with updated tooling
• Artifact download action changes should be tested in workflows that depend on downloading multiple artifacts
• Shell script changes should be validated by testing environment loading in various workflow contexts

Impact / Risk

• Low Risk: Version bumps are minor/patch updates that typically maintain backward compatibility
• Positive Impact: Pagination support prevents potential failures when artifact lists exceed single-page limits
• No Breaking Changes: All changes are internal CI/CD improvements that don't affect application functionality

[mrz1836]

LGTM!