scrapy config: use GIT revision as scrapyd version

[yolile]

closes #802

I deployed the main branch with this config and the output was:

$ scrapyd-deploy kingfisher
Packing version v0.95-245-g6f2d66b-main
Deploying to project "kingfisher" in https://collect.kingfisher.open-contracting.org/addversion.json
Server response (200):
{"node_name": "ocp04", "status": "ok", "project": "kingfisher", "version": "v0.95-245-g6f2d66b-main", "spiders": 131}

[jpmckinney]

I was going through Scrapyd issues (I'm a maintainer of it and scrapyd-client now), and I saw this issue: scrapy/scrapyd#212

Can you test the reported issue, to see if we can reproduce it? If so, this PR would be blocked.

[yolile]

I'm a maintainer of it and scrapyd-client now

Cool!

Can you test the reported issue, to see if we can reproduce it?

Oh no, yes it is happening with our instance now 😨
I deleted the GIT version and now it is working again

[jpmckinney]

Thanks for checking. I'll mark as draft so that I don't accidentally merge it.

[yolile]

I will close this PR instead of leaving it as a draft, as we don't really know when the mentioned issue will be resolved, and the change in the PR is small anyway.