`package` commands output with `--diff` flag

[CaptainCarpensir]

When running a command like copilot env package --diff, if there are no changes to the template, copilot will output:

No changes
[entire template]
...

This is super noisy, and is not doing what the command asked for. We will change this behavior so that it simply outputs No changes.

[KollaAdithya]

Hello! Fix is now released in Copilot v1.33.2 https://github.com/aws/copilot-cli/releases/tag/v1.33.2 🎉🚀