build(deps): bump github.com/Microsoft/hcsshim

Bumps [github.com/Microsoft/hcsshim](https://github.com/Microsoft/hcsshim) from 0.12.0-rc.0 to 0.12.0-rc.1.
- [Release notes](https://github.com/Microsoft/hcsshim/releases)
- [Commits](https://github.com/Microsoft/hcsshim/compare/v0.12.0-rc.0...v0.12.0-rc.1)

---
updated-dependencies:
- dependency-name: github.com/Microsoft/hcsshim
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/Microsoft/hcsshim/internal/log/format.go

@@ -9,13 +9,16 @@ import (
 	"reflect"
 	"time"
 
-	"github.com/containerd/containerd/log"
 	"github.com/sirupsen/logrus"
 	"google.golang.org/protobuf/encoding/protojson"
 	"google.golang.org/protobuf/proto"
 )
 
-const TimeFormat = log.RFC3339NanoFixed
+// TimeFormat is [time.RFC3339Nano] with nanoseconds padded using
+// zeros to ensure the formatted time is always the same number of
+// characters.
+// Based on RFC3339NanoFixed from github.com/containerd/log
+const TimeFormat = "2006-01-02T15:04:05.000000000Z07:00"
 
 func FormatTime(t time.Time) string {
 	return t.Format(TimeFormat)