The previous version did pin nixpkgs to the version in nixpkgs.json.  However,
it did so without a name which means the derivation was only cacheable for a
few minutes.

By supplying name the resulting derivation can now be stored in /nix/store and
re-used as long as the hash does not change.

Run vulnerability scan on CI

See merge request opensource/PrivateStorageio!64

still pretty hard to consume

Update ZKAPAuthorizer

See merge request opensource/PrivateStorageio!66

Add deployment hooks to GitLab CI config

See merge request opensource/PrivateStorageio!63

Increase boot loader timeout to 10s

Closes privatestorage/privatestorageops#329

See merge request opensource/PrivateStorageio!65

... so we can actually catch the boot loader menu from IPMI on the first try.
Resolving privatestorage/privatestorageops#329 .

Remove CircleCI config

See merge request opensource/PrivateStorageio!62

See https://whetstone.privatestorage.io/opensource/PrivateStorageio/-/issues/58

Add GitLab CI config

See merge request opensource/PrivateStorageio!61

We use GitLab instead now.

Not doing artifacts as of now since they are weird in GitLab CI and screw up NixOs building