remove Scaleway labs from list of providers

[volkyeth]

Describe your changes

I've removed Scaleway Labs from the list of pinning service providers.
The service has been discontinued: https://labs.scaleway.com/en/ipfs-pinning/#the-end

Files changed

• docs/how-to/work-with-pinning-services.md

What issue(s) does this address?

none

Does this update depend on any other PRs?

none

Checklist before requesting a review

• Passing the beta version of the Check Markdown links for modified files check. Action results can be viewed here.

Checklist before merging

• Passing all required checks (The beta Check Markdown links for modified files check is not required)

[welcome]

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[github-actions]

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[volkyeth]

note to reviewers: Check Markdown links for modified files failure appears to be unrelated, and most likely a false positive

ERROR: 1 dead links found!
[✖] https://infura.io/ → Status: 403