Remove 'defaults' conda channel from docs.

[ewels]

Fixes #5601

[netlify]

✅ Deploy Preview for nextflow-docs-staging canceled.

Name	Link
🔨 Latest commit	b25862c
🔍 Latest deploy log	https://app.netlify.com/sites/nextflow-docs-staging/deploys/675ff6d486c97b00087bb0ba

[christopher-hakkaart]

Looks good to me.

[pditommaso]

Failing tests 😢

[bentsherman]

@ewels you need to either revert the changes to CondaCacheTest or update the expected conda hashes in those tests. Your choice 😅

[ewels]

I was hoping that the CI would print out the new hash in the log when it failed, so that I could just copy it in without running anything locally. However no such luck by the look of it 😢

[bentsherman]

You have to download the test report given under "Publish tests report" to see that. Or run the test locally, it gives you the same report

[ewels]

@bentsherman thank you! I'd forgotten that this existed. Would be fun to set up a GitHub action to post a link to these assets as a comment on the PR if the tests fail!