Upgrade Lettuce, AssertJ/K versions

Author: garyrussell

build.gradle

@@ -90,8 +90,8 @@ subprojects { subproject ->
 		activeMqVersion = '5.15.9'
 		apacheSshdVersion = '2.2.0'
 		aspectjVersion = '1.9.4'
-		assertjVersion = '3.12.2'
-		assertkVersion = '0.14'
+		assertjVersion = '3.13.1'
+		assertkVersion = '0.19'
 		boonVersion = '0.34'
 		commonsDbcp2Version = '2.6.0'
 		commonsIoVersion = '2.6'
@@ -122,7 +122,7 @@ subprojects { subproject ->
 		junitPlatformVersion = '1.4.1'
 		jythonVersion = '2.7.0'
 		kryoShadedVersion = '4.0.2'
-		lettuceVersion = '5.1.7.RELEASE'
+		lettuceVersion = '5.1.8.RELEASE'
 		log4jVersion = '2.11.2'
 		micrometerVersion = '1.1.4'
 		mockitoVersion = '2.25.1'