update dependencies

pom.xml

@@ -52,10 +52,10 @@
 		<maven-compiler-plugin.version>3.13.0</maven-compiler-plugin.version>
 		<maven-surefire-plugin.version>3.2.5</maven-surefire-plugin.version>
 		<maven-javadoc-plugin.version>3.6.3</maven-javadoc-plugin.version>
-		<maven-source-plugin.version>3.3.1</maven-source-plugin.version>
+		<maven-source-plugin.version>3.3.0</maven-source-plugin.version>
 		<maven-gpg-plugin.version>3.2.2</maven-gpg-plugin.version>
 
-		<nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
+		<nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>
 
 		<versions-maven-plugin.version>2.7</versions-maven-plugin.version>
 
@@ -229,9 +229,9 @@
 				<version>${maven-source-plugin.version}</version>
 				<executions>
 					<execution>
-						<phase>package</phase>
+						<id>attach-sources</id>
 						<goals>
-							<goal>jar</goal>
+							<goal>jar-no-fork</goal>
 						</goals>
 					</execution>
 				</executions>