Update build configuration for RAP Runtime 3.17.0 RC2

- Use Eclipse Platform 4.20 I20210603-0040

Change-Id: I2d037a31ede4dc607da1c96aa15c405922ee811f
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>
diff --git a/features/org.eclipse.rap.e4.equinox.target.feature/.forceQualifierUpdate b/features/org.eclipse.rap.e4.equinox.target.feature/.forceQualifierUpdate
index 94b961b..5d82334 100644
--- a/features/org.eclipse.rap.e4.equinox.target.feature/.forceQualifierUpdate
+++ b/features/org.eclipse.rap.e4.equinox.target.feature/.forceQualifierUpdate
@@ -1 +1 @@
-2021-06-02T12:00:00+00:00
+2021-06-07T12:00:00+00:00
diff --git a/features/org.eclipse.rap.equinox.target.feature/.forceQualifierUpdate b/features/org.eclipse.rap.equinox.target.feature/.forceQualifierUpdate
index 94b961b..5d82334 100644
--- a/features/org.eclipse.rap.equinox.target.feature/.forceQualifierUpdate
+++ b/features/org.eclipse.rap.equinox.target.feature/.forceQualifierUpdate
@@ -1 +1 @@
-2021-06-02T12:00:00+00:00
+2021-06-07T12:00:00+00:00
diff --git a/releng/org.eclipse.rap.build/pom.xml b/releng/org.eclipse.rap.build/pom.xml
index 997ba5c..4204d86 100644
--- a/releng/org.eclipse.rap.build/pom.xml
+++ b/releng/org.eclipse.rap.build/pom.xml
@@ -29,7 +29,7 @@
      -->
     <jetty-repo.url>https://download.eclipse.org/webtools/jetty/10.0.3/repository/</jetty-repo.url>
     <orbit-repo.url>https://download.eclipse.org/tools/orbit/downloads/2021-06/</orbit-repo.url>
-    <platform-repo.url>https://download.eclipse.org/eclipse/updates/4.20-I-builds/I20210526-2310/</platform-repo.url>
+    <platform-repo.url>https://download.eclipse.org/eclipse/updates/4.20-I-builds/I20210603-0040/</platform-repo.url>
     <rap-extra-repo.url>https://download.eclipse.org/rt/rap/base-platforms/3.14/extra-dependencies/</rap-extra-repo.url>
     <license-repo.url>https://download.eclipse.org/cbi/updates/license/</license-repo.url>
     <!-- The build type, N for nighty builds, S for stable builds. S-builds will be signed. -->