Update all dependencies (#229)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle

@@ -8,7 +8,7 @@ buildscript {
     }
   }
   dependencies {
-    classpath group: 'com.diffplug.spotless', name: 'spotless-plugin-gradle', version: '6.5.1'
+    classpath group: 'com.diffplug.spotless', name: 'spotless-plugin-gradle', version: '6.16.0'
     classpath group: 'com.github.spotbugs.snom', name: 'spotbugs-gradle-plugin', version: '5.0.13'
     classpath group: 'net.rdrei.android.buildtimetracker', name: 'gradle-plugin', version: '0.11.1'
     classpath group: 'org.unbroken-dome.gradle-plugins', name: 'gradle-testsets-plugin', version: '4.0.0'
@@ -53,7 +53,7 @@ subprojects {
   // Checkstyle (static analysis - code quality/style)
   apply plugin: 'checkstyle'
   checkstyle {
-    toolVersion = '9.2'
+    toolVersion = '10.8.1'
     configFile = rootProject.file('./checkstyle.xml')
     maxErrors = 0
     maxWarnings = 0
@@ -122,12 +122,12 @@ subprojects {
   // pin dependency versions
   ext {
     // production
-    log4jVersion = '2.17.2'
+    log4jVersion = '2.20.0'
 
     // test
-    junitVersion = '5.8.2'
+    junitVersion = '5.9.2'
     truthVersion = '1.1.3'
-    mockitoVersion = '4.5.1'
+    mockitoVersion = '5.2.0'
   }
 
   dependencies {