Use license-compatible jai-imageio-core

See https://github.com/jai-imageio/jai-imageio-core
diff --git a/taverna-renderers-exts/pom.xml b/taverna-renderers-exts/pom.xml
index e09de80..c469a74 100644
--- a/taverna-renderers-exts/pom.xml
+++ b/taverna-renderers-exts/pom.xml
@@ -31,6 +31,13 @@
 			<artifactId>taverna-renderers-api</artifactId>
 			<version>${project.parent.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>${project.parent.groupId}</groupId>
+			<artifactId>taverna-renderers-impl</artifactId>
+			<version>${project.parent.version}</version>
+			<scope>test</scope>
+		</dependency>
+
 <!--
 		<dependency>
 			<groupId>${project.parent.groupId}</groupId>
@@ -70,9 +77,48 @@
                         <version>${batik.version}</version>
                 </dependency>		
 		<dependency>
-			<groupId>org.icepdf</groupId>
+			<groupId>org.icepdf.os</groupId>
 			<artifactId>icepdf-viewer</artifactId>
-			<version>${org.icepdf.version}</version>
+			<version>6.1.2</version>
+			<exclusions>
+				<exclusion>
+					<groupId>com.sun.media</groupId>
+					<artifactId>jai_imageio</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>javax.media</groupId>
+					<artifactId>jai-core</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-awt-util</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-xml</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-svggen</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-dom</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-svg-dom</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>batik</groupId>
+					<artifactId>batik-util</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+		<dependency>
+			<groupId>com.github.jai-imageio</groupId>
+			<artifactId>jai-imageio-core</artifactId>
+			<version>1.3.1</version>
 		</dependency>
 
 	</dependencies>