Track some dependency updates

junit: 5.3.0-M1 -> 5.7.0
slf4j: 1.7.25 -> 1.7.30
netty: 4.1.51.Final -> 4.1.52.Final
guava: 25.1-jre -> 29.0-jre
checkerFramework: 2.7.0 -> 3.6.1
jline-terminal-jansi: 3.12.1 -> 3.16.0
fastutil: 8.2.3 -> 8.4.1
async-http-client: 2.10.4 -> 2.12.1
completable-futures: 0.3.2 -> 0.3.3
gradle-wrapper: 6.6 -> 6.6.1

BREAKING CHANGE: No breaking change

build.gradle

@@ -22,12 +22,12 @@ allprojects {
         // dependency versions
         textVersion = '3.0.4'
         adventureVersion = '4.0.0-SNAPSHOT'
-        junitVersion = '5.3.0-M1'
-        slf4jVersion = '1.7.25'
+        junitVersion = '5.7.0'
+        slf4jVersion = '1.7.30'
         log4jVersion = '2.13.3'
-        nettyVersion = '4.1.51.Final'
-        guavaVersion = '25.1-jre'
-        checkerFrameworkVersion = '2.7.0'
+        nettyVersion = '4.1.52.Final'
+        guavaVersion = '29.0-jre'
+        checkerFrameworkVersion = '3.6.1'
         configurateVersion = '3.7.1'
 
         getCurrentShortRevision = {