Upgrade to Jetty 9.4.37, Caffeine 2.9, Mockito 3.8, Checkstyle 8.40

Author: jhoeller

build.gradle

@@ -31,7 +31,7 @@ configure(allprojects) { project ->
 			mavenBom "io.projectreactor:reactor-bom:2020.0.4"
 			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR8"
 			mavenBom "io.rsocket:rsocket-bom:1.1.0"
-			mavenBom "org.eclipse.jetty:jetty-bom:9.4.36.v20210114"
+			mavenBom "org.eclipse.jetty:jetty-bom:9.4.37.v20210219"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.4.30"
 			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.4.2"
 			mavenBom "org.junit:junit-bom:5.7.1"
@@ -96,7 +96,7 @@ configure(allprojects) { project ->
 			}
 
 			dependency "com.h2database:h2:1.4.200"
-			dependency "com.github.ben-manes.caffeine:caffeine:2.8.8"
+			dependency "com.github.ben-manes.caffeine:caffeine:2.9.0"
 			dependency "com.github.librepdf:openpdf:1.3.25"
 			dependency "com.rometools:rome:1.15.0"
 			dependency "commons-io:commons-io:2.5"
@@ -198,7 +198,7 @@ configure(allprojects) { project ->
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 			}
-			dependencySet(group: 'org.mockito', version: '3.7.7') {
+			dependencySet(group: 'org.mockito', version: '3.8.0') {
 				entry('mockito-core') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
@@ -340,7 +340,7 @@ configure([rootProject] + javaProjects) { project ->
 	}
 
 	checkstyle {
-		toolVersion = "8.39"
+		toolVersion = "8.40"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}