Update test dependencies.

* Guava to 27.1
* Mockito to latest rebuild in Orbit

Change-Id: Ifa4a3b6f316bc3f307491ab822854a9de708ed9d
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/core/releng/org.eclipse.dltk.core.targetplatform/org.eclipse.dltk.core.targetplatform.target b/core/releng/org.eclipse.dltk.core.targetplatform/org.eclipse.dltk.core.targetplatform.target
index ad0b200..5360633 100644
--- a/core/releng/org.eclipse.dltk.core.targetplatform/org.eclipse.dltk.core.targetplatform.target
+++ b/core/releng/org.eclipse.dltk.core.targetplatform/org.eclipse.dltk.core.targetplatform.target
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?><?pde version="3.8"?>
-<target name="org.eclipse.dltk.core.targetplatform" sequenceNumber="21">
+<target name="org.eclipse.dltk.core.targetplatform" sequenceNumber="22">
     <locations>
         <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="slicer" includeSource="false" type="InstallableUnit">
             <unit id="org.antlr.runtime" version="3.0.0.v200803061811"/>
@@ -7,8 +7,8 @@
             <repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20160221192158/repository/"/>
         </location>
         <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="slicer" includeSource="false" type="InstallableUnit">
-            <unit id="com.google.guava" version="21.0.0.v20170206-1425"/>
-            <unit id="com.google.guava.source" version="21.0.0.v20170206-1425"/>
+            <unit id="com.google.guava" version="27.1.0.v20190517-1946"/>
+            <unit id="com.google.guava.source" version="27.1.0.v20190517-1946"/>
             <unit id="org.apache.lucene.analyzers-common" version="6.1.0.v20161115-1612"/>
             <unit id="org.apache.lucene.analyzers-common.source" version="8.0.0.v20190404-1858"/>
             <unit id="org.apache.lucene.core" version="6.1.0.v20170814-1820"/>
@@ -29,11 +29,11 @@
             <unit id="org.hamcrest.text" version="0.0.0"/>
             <unit id="org.junit" version="4.12.0.v201504281640"/>
             <unit id="org.junit.source" version="4.12.0.v201504281640"/>
-            <unit id="org.mockito" version="2.23.0.v20181106-1534"/>
+            <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
             <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
             <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
             <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
-            <repository location="http://download.eclipse.org/tools/orbit/downloads/drops/S20190501151401/repository"/>
+            <repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20190528213420/repository"/>
         </location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="slicer" includeSource="false" type="InstallableUnit">
             <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>