Update dependency io.reactivex.rxjava3:rxjava to v3.1.6

Author: mend-for-github.colasdn.workers.dev[bot]

prj/coherence-dependencies/pom.xml

@@ -262,7 +262,7 @@
     <oracle.db.version>11.2.0.3.0</oracle.db.version>
     <protobuf.version>3.21.12</protobuf.version>
     <resin.version>3.0</resin.version>
-    <rxjava.version>3.0.2</rxjava.version>
+    <rxjava.version>3.1.6</rxjava.version>
     <sdoapi.version>12.2.0.1.0</sdoapi.version>
     <slf4j.version>1.7.36</slf4j.version>
     <spymemcached.version>2.12.3</spymemcached.version>