chore(deps): upgrade dependencies/plugins 📦

bump log4j-bom from 2.24.1 to 2.24.2 (#280)
bump kotlin.version from 2.0.21 to 2.1.0 (#281)
bump kotlin.version from 2.0.21 to 2.1.0 in /demos (#282)

demos/pom.xml

@@ -14,7 +14,7 @@
 		<project.reporting.outputEncoding>${project.build.sourceEncoding}</project.reporting.outputEncoding>
 		<maven.deploy.skip>true</maven.deploy.skip>
 
-		<kotlin.version>2.0.21</kotlin.version>
+		<kotlin.version>2.1.0</kotlin.version>
 		<kotlin.compiler.jvmTarget>${maven.compiler.source}</kotlin.compiler.jvmTarget>
 
 		<!-- overridden by submodule -->

pom.xml

@@ -78,13 +78,13 @@
 		<jsr305.version>3.0.2</jsr305.version>
 		<jetbrains.annotations.version>26.0.1</jetbrains.annotations.version>
 
-		<kotlin.version>2.0.21</kotlin.version>
+		<kotlin.version>2.1.0</kotlin.version>
 		<kotlin.compiler.jvmTarget>${maven.compiler.source}</kotlin.compiler.jvmTarget>
 		<!-- https://kotlinlang.org/docs/maven.html#specifying-compiler-options -->
-		<kotlin.compiler.apiVersion>1.7</kotlin.compiler.apiVersion>
+		<kotlin.compiler.apiVersion>1.8</kotlin.compiler.apiVersion>
 
 		<slf4j.version>2.0.16</slf4j.version>
-		<log4j2.version>2.24.1</log4j2.version>
+		<log4j2.version>2.24.2</log4j2.version>
 		<log4j2.slf4j.impl.aid>log4j-slf4j2-impl</log4j2.slf4j.impl.aid>
 		<guava.version>33.3.1-jre</guava.version>