deps: update dependency joda-time:joda-time to v2.10.8 (#327)

Author: renovate-bot

pubsublite-beam-io/pom.xml

@@ -60,7 +60,7 @@
     <dependency>
       <groupId>joda-time</groupId>
       <artifactId>joda-time</artifactId>
-      <version>2.10.7</version>
+      <version>2.10.8</version>
     </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>