Don't commit files if only date or Kicad version changed

[chuckwagoncomputing]

This is to fix rusefi/rusefi-hardware#223

For this to work, projects using hellen-one will have to update their submodule.

I also excluded Kicad version changes so I could test locally, It will also keep new files from being pushed in the following scenarios:

• The Github Actions runner is updated to a new version of Ubuntu (On Ubuntu, the Kicad version string includes the Ubuntu release)
• If we ever use self-hosted runners, and some runs run on them, and some don't.
• Whenever Kicad is updated (maybe we want to generate new files if this happens?)

I can remove that exclusion if you prefer.

[rusefillc]

Just updated submodule at https://github.com/rusefi/rusefi-hardware