Use new gwt groupid, updated j2cl, and updated junit

Author: niloc132

gwt-core-gwt2-tests/pom.xml

@@ -50,18 +50,28 @@
         <gwt.version>2.10.0</gwt.version>
     </properties>
 
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.gwtproject</groupId>
+                <artifactId>gwt</artifactId>
+                <version>${gwt.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
     <dependencies>
          <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-user</artifactId>
-            <version>${gwt.version}</version>
-            <scope>test</scope>
+             <version>${gwt.version}</version>
         </dependency>
         <dependency>
-            <groupId>com.google.gwt</groupId>
+            <groupId>org.gwtproject</groupId>
             <artifactId>gwt-dev</artifactId>
             <version>${gwt.version}</version>
-            <scope>test</scope>
         </dependency>
 
         <dependency>

gwt-core-j2cl-tests/pom.xml

@@ -44,7 +44,7 @@
     <inceptionYear>2019</inceptionYear>
 
     <properties>
-        <maven.j2cl.plugin>0.20</maven.j2cl.plugin>
+        <maven.j2cl.plugin>0.21.0</maven.j2cl.plugin>
         <maven.resource.plugin>3.1.0</maven.resource.plugin>
 
         <!-- CI -->

pom.xml

@@ -65,7 +65,7 @@
         <maven.surfire.plugin>3.0.0-M1</maven.surfire.plugin>
 
         <elemental2.version>1.1.0</elemental2.version>
-        <junit.version>4.12</junit.version>
+        <junit.version>4.13.2</junit.version>
     </properties>
 
     <build>