docs(examples): Update test matrix software versions and improve step…

… configuration - Fixes argoproj#8591

- Updated test matrix to reflect latest software versions.
- Added detailed comments to improve workflow maintainability.
- Set  for all steps to ensure consistent file paths.
- Adjusted resource requests and limits (CPU/memory) to align with step requirements and runtime optimization.
- Refactored step/task commands to conform to WorkflowTemplate format for modularity.
- Combined unit tests and test coverage into a single step for efficiency.
- Improved readability and reduced redundancy by centralizing template logic.

Signed-off-by: Wesley Scholl <[email protected]>