Upgrade to AssertJ 3.18.1.

Author: jxblum

gradle.properties

@@ -1,6 +1,6 @@
 antlrVersion=2.7.7
 apacheGeodeVersion=1.9.2
-assertjVersion=3.18.0
+assertjVersion=3.18.1
 junitVersion=4.13.1
 lombokVersion=1.18.16
 mockitoVersion=3.6.0

pom.xml

@@ -84,7 +84,7 @@
 		<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<apache-geode.version>1.9.2</apache-geode.version>
-		<assertj.version>3.18.0</assertj.version>
+		<assertj.version>3.18.1</assertj.version>
 		<junit.version>4.13.1</junit.version>
 		<log4j.version>2.12.1</log4j.version>
 		<logback.version>1.2.3</logback.version>