build: Update java to version 20

Containerfile

@@ -1,5 +1,5 @@
 # Stage 1: Build bot
-FROM docker.io/maven:3.9-eclipse-temurin-19 AS maven
+FROM docker.io/maven:3.9-eclipse-temurin-20 AS maven
 WORKDIR /app
 # Copy the dependency specifications
 COPY pom.xml .
@@ -9,7 +9,7 @@ COPY migration/pom.xml migration/
 COPY web/pom.xml web/
 
 # Adding default Maven arguments
-ENV MAVEN_CLI_OPTS="--batch-mode --no-transfer-progress"
+ENV MAVEN_CLI_OPTS="--batch-mode --no-transfer-progress -Dmaven.test.skip"
 
 # Resolve dependencies for shared libraries
 RUN mvn $MAVEN_CLI_OPTS -pl db -am dependency:go-offline
@@ -28,20 +28,20 @@ COPY migration migration
 RUN mvn $MAVEN_CLI_OPTS -pl migration package
 
 # Stage 2: Create final web
-FROM docker.io/eclipse-temurin:19-jdk-jammy AS web
+FROM docker.io/eclipse-temurin:20-jdk-jammy AS web
 WORKDIR /app
 COPY --from=maven /app/web/target/web-*-fat.jar /app/web.jar
 EXPOSE 8080
 CMD ["java", "-jar", "/app/web.jar"]
 
 # Stage 2: Create final migration
-FROM docker.io/eclipse-temurin:19-jdk-jammy AS migration
+FROM docker.io/eclipse-temurin:20-jdk-jammy AS migration
 WORKDIR /app
 COPY --from=maven /app/migration/target/migration-*-fat.jar /app/migration.jar
 CMD ["java", "-jar", "/app/migration.jar"]
 
 # Stage 2: Create final bot
-FROM docker.io/eclipse-temurin:19-jdk-jammy AS bot
+FROM docker.io/eclipse-temurin:20-jdk-jammy AS bot
 WORKDIR /app
 COPY --from=maven /app/bot/target/bot-*-fat.jar /app/bot.jar
 CMD ["java", "-jar", "/app/bot.jar"]

pom.xml

@@ -27,8 +27,8 @@
     </licenses>
 
     <properties>
-        <maven.compiler.source>19</maven.compiler.source>
-        <maven.compiler.target>19</maven.compiler.target>
+        <maven.compiler.source>20</maven.compiler.source>
+        <maven.compiler.target>20</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <jackson.version>2.15.1</jackson.version>
     </properties>