Upgrade AWS library to v1.12.36

This upgrade, and vendors aws-sdk-go to version v1.12.36.
This is because it has new API calls accessible to the S3 client,
specifically S3.ListObjectsV2PagesWithContext

Signed-off-by: Sargun Dhillon <sargun@sargun.me>

vendor/github.com/aws/aws-sdk-go/service/s3/customizations.go

@@ -44,3 +44,21 @@ func defaultInitRequestFn(r *request.Request) {
 		r.Handlers.Unmarshal.PushFront(copyMultipartStatusOKUnmarhsalError)
 	}
 }
+
+// bucketGetter is an accessor interface to grab the "Bucket" field from
+// an S3 type.
+type bucketGetter interface {
+	getBucket() string
+}
+
+// sseCustomerKeyGetter is an accessor interface to grab the "SSECustomerKey"
+// field from an S3 type.
+type sseCustomerKeyGetter interface {
+	getSSECustomerKey() string
+}
+
+// copySourceSSECustomerKeyGetter is an accessor interface to grab the
+// "CopySourceSSECustomerKey" field from an S3 type.
+type copySourceSSECustomerKeyGetter interface {
+	getCopySourceSSECustomerKey() string
+}