fix: remove filops snapshot provider and fix ci

[hanabi1224]

Summary of changes

Filops snapshot service has been shut down, update the code and CI accordingly.

https://github.com/ChainSafe/forest/actions/runs/7551462787/job/20562704877?pr=3873#step:6:50

+ forest-tool snapshot fetch --chain calibnet --vendor filops
2024-01-17T08:24:58.902367Z ERROR forest_filecoin::cli_shared::cli: Failed fetching the snapshot: error sending request for url (https://snapshots.calibrationnet.filops.net/minimal/latest.zst): error trying to connect: dns error: failed to lookup address information: No address associated with hostname

Changes introduced in this pull request:

• remove Filops from TrustedVendor
• fix CI

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

[hanabi1224]

Keeps TrustedVendor to allow new snapshot providers in the future

[LesnyRumcajs]

@hanabi1224 shall we delete this test now? Ideally, we'd have no mentions of FilOps anymore (except for the bootstrap nodes).

Or at least add a comment, so that future engineers don't have to do any archaeology to understand what this is about.

[hanabi1224]

@hanabi1224 shall we delete this test now? Ideally, we'd have no mentions of FilOps anymore (except for the bootstrap nodes).

Or at least add a comment, so that future engineers don't have to do any archaeology to understand what this is about.

@LesnyRumcajs Removed. Please re-approve