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

[mrz1836]

What Changed

• Updated .dockerignore to exclude entire docs directory instead of only docs/*.md files
• Updated GO_COVERAGE_VERSION from v1.3.1 to v1.3.5 in .github/env/10-coverage.env
• 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

• Upgrading tooling versions ensures access to latest bug fixes, performance improvements, and security patches
• Broader exclusion of the docs directory in .dockerignore reduces Docker image size by preventing documentation files from being included in the build context
• Keeping tooling dependencies up-to-date maintains compatibility with newer Go versions and improves CI/CD reliability

Testing Performed

• Verified that updated tool versions are available and properly released
• Confirmed .dockerignore change correctly excludes the entire docs directory without impacting build functionality
• Validated that CI/CD pipelines continue to function with updated dependency versions

Impact / Risk

• Breaking Change: None - all changes are backward compatible dependency updates
• Risk: Low - tool version updates are minor/patch releases with no breaking changes
• Performance: Potential improvements from updated tooling versions, particularly in linting and static analysis phases