Upgrade to Influxdb Java 2.9

Closes gh-12258

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -68,7 +68,7 @@
 		<httpclient.version>4.5.5</httpclient.version>
 		<httpcore.version>4.4.9</httpcore.version>
 		<infinispan.version>9.1.6.Final</infinispan.version>
-		<influxdb-java.version>2.8</influxdb-java.version>
+		<influxdb-java.version>2.9</influxdb-java.version>
 		<jackson.version>2.9.4</jackson.version>
 		<janino.version>3.0.8</janino.version>
 		<javax-annotation.version>1.3.2</javax-annotation.version>