chore: update golang (to 1.20.x) and golangci-linter (#1388)

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

pkg/storage/common.go

@@ -203,7 +203,6 @@ func CheckIfIndexNeedsUpdate(index *ispec.Index, desc *ispec.Descriptor,
 		manifest := manifest
 		if reference == manifest.Digest.String() {
 			// nothing changed, so don't update
-			desc = &manifest
 			updateIndex = false
 
 			break
@@ -213,7 +212,6 @@ func CheckIfIndexNeedsUpdate(index *ispec.Index, desc *ispec.Descriptor,
 		if ok && v == reference {
 			if manifest.Digest.String() == desc.Digest.String() {
 				// nothing changed, so don't update
-				desc = &manifest
 				updateIndex = false
 
 				break

pkg/storage/s3/s3.go

@@ -1458,7 +1458,7 @@ func (is *ObjectStorage) getOriginalBlobFromDisk(duplicateBlobs []string) (strin
 }
 
 func (is *ObjectStorage) getOriginalBlob(digest godigest.Digest, duplicateBlobs []string) (string, error) {
-	originalBlob := ""
+	var originalBlob string
 
 	var err error