Update maven build plugins.

* maven resources plugin to 3.1.0
* maven dependency plugin to 3.1.1
* maven compiler plugin to 3.8.1
* eclipse jarsigner plugin to 1.1.7

Change-Id: I4964dbfa46cdbc809aef20dc9bdd1e20df80cfc3
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/releng/mavenparent/pom.xml b/releng/mavenparent/pom.xml
index 7a26c2c..eebe65b 100644
--- a/releng/mavenparent/pom.xml
+++ b/releng/mavenparent/pom.xml
@@ -61,8 +61,8 @@
     <!-- versions used for plug-ins below -->
     <tycho-version>1.3.0</tycho-version>
     <tycho-extras-version>1.3.0</tycho-extras-version>
-    <maven-resources-version>2.7</maven-resources-version>
-    <maven-dependency-version>2.10</maven-dependency-version>
+    <maven-resources-version>3.1.0</maven-resources-version>
+    <maven-dependency-version>3.1.1</maven-dependency-version>
 
     <!-- versions of the EBR plug-in to use -->
     <ebr-version>1.1.0-SNAPSHOT</ebr-version>
@@ -479,7 +479,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
-          <version>3.6.1</version>
+          <version>3.8.1</version>
         </plugin>
         <plugin>
           <groupId>org.eclipse.tycho</groupId>
@@ -564,7 +564,7 @@
         <plugin>
           <groupId>org.eclipse.cbi.maven.plugins</groupId>
           <artifactId>eclipse-jarsigner-plugin</artifactId>
-          <version>1.1.5</version>
+          <version>1.1.7</version>
         </plugin>
       </plugins>