Revert "Update go-containerregistry to get https://github.com/google/go-containerregistry/pull/693"

This reverts commit f55c34ab92.

vendor/github.com/prometheus/common/model/metric.go

@@ -21,6 +21,7 @@ import (
 )
 
 var (
+	separator = []byte{0}
 	// MetricNameRE is a regular expression matching valid metric
 	// names. Note that the IsValidMetricName function performs the same
 	// check but faster than a match with this regular expression.

vendor/github.com/prometheus/common/model/time.go

@@ -43,7 +43,7 @@ const (
 // (1970-01-01 00:00 UTC) excluding leap seconds.
 type Time int64
 
-// Interval describes an interval between two timestamps.
+// Interval describes and interval between two timestamps.
 type Interval struct {
 	Start, End Time
 }
@@ -150,13 +150,7 @@ func (t *Time) UnmarshalJSON(b []byte) error {
 			return err
 		}
 
-		// If the value was something like -0.1 the negative is lost in the
-		// parsing because of the leading zero, this ensures that we capture it.
-		if len(p[0]) > 0 && p[0][0] == '-' && v+va > 0 {
-			*t = Time(v+va) * -1
-		} else {
-			*t = Time(v + va)
-		}
+		*t = Time(v + va)
 
 	default:
 		return fmt.Errorf("invalid time %q", string(b))