Add missing copyright headers

Autoported commit.
Original commit hash: [3b40eca81]

Author: iText-CI

itext.tests/itext.layout.tests/itext/layout/renderer/BlockRendererUnitTest.cs

@@ -1,3 +1,25 @@
+/*
+This file is part of the iText (R) project.
+Copyright (c) 1998-2021 iText Group NV
+Authors: iText Software.
+
+This program is offered under a commercial and under the AGPL license.
+For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.
+
+AGPL licensing:
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 using iText.IO.Source;
 using iText.Kernel.Geom;
 using iText.Kernel.Pdf;

port-hash

@@ -1 +1 @@
-1bae5b73b4876ad99f40eccb6bd757e494076014
+3b40eca81fe13dc93d1f673cb926866e0181dd9c