Update dependencies. (#655)

Author: conniey

pom.xml

@@ -56,7 +56,7 @@
       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava</artifactId>
-        <version>20.0</version>
+        <version>24.1.1-jre</version>
       </dependency>
       <dependency>
         <groupId>com.squareup.retrofit2</groupId>
@@ -91,12 +91,12 @@
       <dependency>
         <groupId>com.fasterxml.jackson.core</groupId>
         <artifactId>jackson-databind</artifactId>
-        <version>2.9.10.1</version>
+        <version>2.10.1</version>
       </dependency>
       <dependency>
         <groupId>com.fasterxml.jackson.datatype</groupId>
         <artifactId>jackson-datatype-joda</artifactId>
-        <version>2.10.0</version>
+        <version>2.10.1</version>
       </dependency>
       <dependency>
         <groupId>org.apache.commons</groupId>