fix: fix publisher (#24)

## Description

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relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #24
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

cmd/cmd/publish/provider.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"io/fs"
 	"log"
+	"log/slog"
 	"os"
 	"os/exec"
 	"path"
@@ -171,7 +172,9 @@ func (p *Provider) createVersionsFile() error {
 	downloadPath := path.Join(p.Domain, "v1", "providers", p.Namespace, p.Provider, "versions")
 	err = data.LoadFromUrl(fmt.Sprintf("https://%s", downloadPath))
 	if err != nil {
-		return fmt.Errorf("error getting existing versions file: %w", err)
+		slog.Warn("error getting existing versions file, start with empty")
+		// TODO: create flag for first use or make it more robust
+		// return fmt.Errorf("error getting existing versions file: %w", err)
 	}
 
 	err = data.AddVersion(version)