versions bumps

Author: niesfisch

pom.xml

@@ -14,6 +14,9 @@
         <java.version>8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
+        <maven.surefire.plugin.version>3.2.5</maven.surefire.plugin.version>
+        <maven.compiler.plugin.version>3.13.0</maven.compiler.plugin.version>
+        <maven.assembly.plugin.version>3.7.1</maven.assembly.plugin.version>
     </properties>
 
     <developers>
@@ -48,7 +51,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.15</version>
+            <version>2.2</version>
         </dependency>
         <dependency>
             <groupId>org.javassist</groupId>
@@ -59,7 +62,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.2</version>
             <type>jar</type>
             <scope>test</scope>
         </dependency>
@@ -70,9 +73,9 @@
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
+            <groupId>ch.qos.reload4j</groupId>
+            <artifactId>reload4j</artifactId>
+            <version>1.2.26</version>
             <type>jar</type>
         </dependency>
     </dependencies>
@@ -82,7 +85,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.19</version>
+                <version>${maven.surefire.plugin.version}</version>
                 <configuration>
                     <excludes>
                         <exclude>**/*Integration*Test.java</exclude>
@@ -92,15 +95,17 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>2.5.1</version>
+                <version>${maven.compiler.plugin.version}</version>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
                 </configuration>
             </plugin>
 
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
+                <version>${maven.assembly.plugin.version}</version>
                 <configuration>
                     <archive>
                         <manifestEntries>