deps: update dependency org.threeten:threetenbp to v1.6.3 (#979)

Author: renovate-bot

pom.xml

@@ -167,7 +167,7 @@
     <truth.version>1.1.3</truth.version>
     <easymock.version>4.3</easymock.version>
     <findbugs.version>3.0.2</findbugs.version>
-    <threetenbp.version>1.6.2</threetenbp.version>
+    <threetenbp.version>1.6.3</threetenbp.version>
     <objenesis.version>3.3</objenesis.version>
     <errorprone.version>2.15.0</errorprone.version>
     <gson.version>2.9.1</gson.version>