fixed pom.xml

Issue #208

pom.xml

@@ -77,6 +77,8 @@
 	</licenses>
 
 	<properties>
+		<java.source>11</java.source>
+		<java.target>11</java.target>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<org.imixs.workflow.version>5.2.17</org.imixs.workflow.version>
 		<org.imixs.melman.version>1.0.22</org.imixs.melman.version>
@@ -94,15 +96,15 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>1.8</source>
-					<target>1.8</target>
+					<source>${java.source}</source>
+					<target>${java.target}</target>
 				</configuration>
 			</plugin>
 			<!-- release management -->
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-release-plugin</artifactId>
-				<version>2.5.3</version>
+				<version>3.0.1</version>
 				<configuration>
 					<autoVersionSubmodules>true</autoVersionSubmodules>
 					<useReleaseProfile>false</useReleaseProfile>
@@ -114,13 +116,13 @@
 			<plugin>
 				<groupId>org.sonatype.plugins</groupId>
 				<artifactId>nexus-staging-maven-plugin</artifactId>
-				<version>1.6.8</version>
+				<version>1.6.13</version>
 				<extensions>true</extensions>
 				<configuration>
 					<serverId>ossrh</serverId>
 					<nexusUrl>https://oss.sonatype.org/</nexusUrl>
 					<autoReleaseAfterClose>true</autoReleaseAfterClose>
-					<stagingProgressTimeoutMinutes>30</stagingProgressTimeoutMinutes>
+					<stagingProgressTimeoutMinutes>15</stagingProgressTimeoutMinutes>
 				</configuration>
 			</plugin>