Update dependency versions.

Author: heuermh

pom.xml

@@ -151,23 +151,23 @@
       <dependency>
 	<groupId>junit</groupId>
 	<artifactId>junit</artifactId>
-	<version>4.13.1</version>
+	<version>4.13.2</version>
 	<scope>test</scope>
       </dependency>
       <dependency>
 	<groupId>commons-dbcp</groupId>
 	<artifactId>commons-dbcp</artifactId>
-	<version>1.2.2</version>
+	<version>1.4</version>
       </dependency>
       <dependency>
 	<groupId>javax.persistence</groupId>
 	<artifactId>persistence-api</artifactId>
-	<version>1.0</version>
+	<version>1.0.2</version>
       </dependency>
       <dependency>
 	<groupId>javax.xml.bind</groupId>
 	<artifactId>jaxb-api</artifactId>
-	<version>2.2</version>
+	<version>2.3.1</version>
       </dependency>
       <dependency>
 	<groupId>org.jgrapht</groupId>
@@ -177,7 +177,7 @@
       <dependency>
 	<groupId>xerces</groupId>
 	<artifactId>xercesImpl</artifactId>
-	<version>2.12.0</version>
+	<version>2.12.1</version>
       </dependency>
     </dependencies>
   </dependencyManagement>

sequencing/pom.xml

@@ -16,7 +16,7 @@
       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava</artifactId>
-        <version>24.1.1-jre</version>
+        <version>30.1.1-jre</version>
       </dependency>
     </dependencies>
   </dependencyManagement>