updating java to version 11 and non-core dependencies

Author: Armin Schrenk

README.md

@@ -13,7 +13,7 @@ This project is in an early stage and not ready for production use. We recommend
 
 Download the jar file via [GitHub Releases](https://github.com/cryptomator/cli/releases).
 
-Cryptomator CLI depends on Java 8. In addition, the JCE unlimited strength policy files must be installed (needed for 256-bit keys).
+Cryptomator CLI requires that at least JDK 11 is present on your system.
 
 ```sh
 java -jar cryptomator-cli-x.y.z.jar \

pom.xml

@@ -8,12 +8,12 @@
 	<url>https://github.com/cryptomator/cli</url>
 
 	<properties>
-		<commons.cli.version>1.3.1</commons.cli.version>
-		<logback.version>1.2.2</logback.version>
 		<cryptofs.version>1.9.10</cryptofs.version>
 		<webdav-nio.version>1.0.11</webdav-nio.version>
+		<commons.cli.version>1.4</commons.cli.version>
+		<logback.version>1.2.3</logback.version>
 
-		<java.version>1.8</java.version>
+		<java.version>11</java.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 
@@ -71,17 +71,18 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.6.1</version>
+				<version>3.8.1</version>
 				<configuration>
 					<source>${java.version}</source>
 					<target>${java.version}</target>
+					<release>${java.version}</release>
 					<showWarnings>true</showWarnings>
 				</configuration>
 			</plugin>
 
 			<plugin>
 				<artifactId>maven-assembly-plugin</artifactId>
-				<version>3.0.0</version>
+				<version>3.3.0</version>
 				<executions>
 					<execution>
 						<id>make-assembly</id>