build(deps): bump github.com/containers/storage from 1.15.0 to 1.15.2

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.15.0 to 1.15.2.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.15.0...v1.15.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/klauspost/compress/zstd/blockdec.go

@@ -89,6 +89,7 @@ type blockDec struct {
 	sequenceBuf []seq
 	tmp         [4]byte
 	err         error
+	decWG       sync.WaitGroup
 }
 
 func (b *blockDec) String() string {
@@ -105,6 +106,7 @@ func newBlockDec(lowMem bool) *blockDec {
 		input:   make(chan struct{}, 1),
 		history: make(chan *history, 1),
 	}
+	b.decWG.Add(1)
 	go b.startDecoder()
 	return &b
 }
@@ -183,11 +185,13 @@ func (b *blockDec) Close() {
 	close(b.input)
 	close(b.history)
 	close(b.result)
+	b.decWG.Wait()
 }
 
 // decodeAsync will prepare decoding the block when it receives input.
 // This will separate output and history.
 func (b *blockDec) startDecoder() {
+	defer b.decWG.Done()
 	for range b.input {
 		//println("blockDec: Got block input")
 		switch b.Type {