use json encoding for resolvedDepencies content

pkg/chains/formats/slsa/v2alpha2/internal/build_definitions/resolved_dependencies.go

@@ -17,9 +17,7 @@ limitations under the License.
 package builddefinitions
 
 import (
-	"bytes"
 	"context"
-	"encoding/gob"
 	"encoding/json"
 
 	"github.com/in-toto/in-toto-golang/in_toto/slsa_provenance/common"
@@ -52,21 +50,21 @@ type addTaskDescriptorContent func(*v1beta1.TaskRun) (v1.ResourceDescriptor, err
 // and content if possible.
 func AddTektonTaskDescriptor(tr *v1beta1.TaskRun) (v1.ResourceDescriptor, error) {
 	rd := v1.ResourceDescriptor{}
-	buf := bytes.Buffer{}
-	enc := gob.NewEncoder(&buf)
-	err := enc.Encode(tr)
+	storedTr, err := json.Marshal(tr)
 	if err != nil {
 		return rd, err
 	}
+	logger := logging.FromContext(context.TODO())
+	logger.Infof("logging taskRun %v", tr)
 	// add remote task configsource information in materials
 	if tr.Status.Provenance != nil && tr.Status.Provenance.RefSource != nil {
 		rd.Name = pipelineTaskConfigName
 		rd.URI = tr.Status.Provenance.RefSource.URI
 		rd.Digest = tr.Status.Provenance.RefSource.Digest
-		rd.Content = buf.Bytes()
+		rd.Content = storedTr
 	} else {
 		rd.Name = pipelineTaskConfigName
-		rd.Content = buf.Bytes()
+		rd.Content = storedTr
 	}
 	return rd, nil
 }