Use ASN1OutputStream.create instead of deprecated constructor in PdfPKCS7 class

DEVSIX-6119

Autoported commit.
Original commit hash: [1271bec6c]

Author: yulian-gaponenko

itext/itext.sign/itext/signatures/PdfPKCS7.cs

@@ -635,7 +635,7 @@ public virtual byte[] GetEncodedPKCS1() {
                     digest = sig.GenerateSignature();
                 }
                 MemoryStream bOut = new MemoryStream();
-                Asn1OutputStream dout = new Asn1OutputStream(bOut);
+                Asn1OutputStream dout = new Org.BouncyCastle.Asn1.Asn1OutputStream(bOut);
                 dout.WriteObject(new DerOctetString(digest));
                 dout.Dispose();
                 return bOut.ToArray();
@@ -785,7 +785,7 @@ public virtual byte[] GetEncodedPKCS7(byte[] secondDigest, PdfSigner.CryptoStand
                 whole.Add(new DerObjectIdentifier(SecurityIDs.ID_PKCS7_SIGNED_DATA));
                 whole.Add(new DerTaggedObject(0, new DerSequence(body)));
                 MemoryStream bOut = new MemoryStream();
-                Asn1OutputStream dout = new Asn1OutputStream(bOut);
+                Asn1OutputStream dout = new Org.BouncyCastle.Asn1.Asn1OutputStream(bOut);
                 dout.WriteObject(new DerSequence(whole));
                 dout.Dispose();
                 return bOut.ToArray();

port-hash

@@ -1 +1 @@
-7f177b417d18be1b18bfbf972f33835887b0bfb9
+0c457d47891c1d9215a7cbc24200e7dd6638594f