[Bug] WET bot is generating empty commits

[EricDunsworth]

Describe the bug:
The vast majority of recent commits generated by @wet-boew-bot in this repo are empty. As in, they're just "hollow" commit messages with 0 changed files.

That might not necessarily be a bug in and of itself, but it adds lots of unnecessary bloat to the repo's commit history. Not to mention that it makes it practically impossible to find anything meaningful in GitHub's commit history section (it doesn't distinguish commits associated to changed files).

@duboisp @delisma Could the bot be updated to only generate commits when files have been changed?

Thanks :)!

To Reproduce:

1. Visit this repo's commit history section.
2. Visit links to recent commits. For example, here are the 3 latest ones:
   • 8349828
   • b4c7853
   • 23513bf
3. Review changed files.

Expected behaviour:
All commits should contain changed files.

Actual behaviour:
Many recent commits contain 0 changed files.

[duboisp]

Those commit are generated by the GCWeb continuous deployment GitHub action.

Feel free to update it and submit a PR that will fix your issue. Here the code that create the commit in this repository: https://github.com/wet-boew/GCWeb/blob/master/.github/workflows/cd.yml#L105-L119

For now, I don't know when we will be able to look at this issue but we can discuss about during our weekly office hours.