Fix bug handling images with slashes in ref (#3211)

Fix bug handling images with slashes

This commit fixes a bug when trying to list images with
    names in their reference. The github API expects everything
    after the org urls escaped, for exmaple:

     ghcr.io/org/name/with/slahes

    needs to be

     ghcr.io/org/name%2Fwith%2Fslahes

Signed-off-by: Adolfo García Veytia (puerco) <puerco@stacklok.com>
Co-authored-by: Don Browne <dmjb@users.noreply.github.com>

internal/engine/ingester/artifact/artifact.go

@@ -19,6 +19,7 @@ package artifact
 import (
 	"context"
 	"fmt"
+	"net/url"
 	"sort"
 	"strings"
 	"time"
@@ -259,7 +260,10 @@ func getAndFilterArtifactVersions(
 	}
 
 	// Fetch all available versions of the artifact
-	upstreamVersions, err := ghCli.GetPackageVersions(ctx, artifact.Owner, artifact.GetTypeLower(), artifact.GetName())
+	artifactName := url.QueryEscape(artifact.GetName())
+	upstreamVersions, err := ghCli.GetPackageVersions(
+		ctx, artifact.Owner, artifact.GetTypeLower(), artifactName,
+	)
 	if err != nil {
 		return nil, fmt.Errorf("error retrieving artifact versions: %w", err)
 	}