devonfw#979: update docgen to fix gpg issue

Author: hohwille

documentation/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.devonfw.tools</groupId>
     <artifactId>devonfw-docgen-pdf</artifactId>
-    <version>2021.12.002</version>
+    <version>2023.01.001</version>
   </parent>
   <groupId>com.devonfw.tools.ide</groupId>
   <artifactId>devonfw-ide-doc</artifactId>