Update dependency net.logstash.logback:logstash-logback-encoder to v9

Author: renovate[bot]

best-practices/pom.xml

@@ -58,7 +58,7 @@
 		<dependency>
 			<groupId>net.logstash.logback</groupId>
 			<artifactId>logstash-logback-encoder</artifactId>
-			<version>8.1</version>
+			<version>9.0</version>
 		</dependency>
 		<dependency>
 			<groupId>io.micrometer</groupId>