Updating batik-rasterizer to fix vulnerability

in its dependency, batik-svgrasterizer.

Vulnerability finding:
https://snyk.io/vuln/maven:org.apache.xmlgraphics%3Abatik-svgrasterizer

Author: Zoltán Erdmann

README.md

@@ -371,7 +371,7 @@ To rasterize with batik, provide this library on the classpath:
 <dependency>
     <groupId>org.apache.xmlgraphics</groupId>
     <artifactId>batik-rasterizer</artifactId>
-    <version>1.10</version>
+    <version>1.13</version>
 </dependency>
 ```
 

graphviz-java/pom.xml

@@ -93,7 +93,7 @@
         <dependency>
             <groupId>org.apache.xmlgraphics</groupId>
             <artifactId>batik-rasterizer</artifactId>
-            <version>1.10</version>
+            <version>1.13</version>
             <optional>true</optional>
             <exclusions>
                 <exclusion>