Update build configuration for RAP Tools 3.23.0 M2

- Use Eclipse Platform 4.26 I20221020-1800 (M2)
- Add org.slf4j.api to RAP Tools feature to make sure it is installed
  and distributed together with RAP because it had been removed in
  recent Eclipse Platform builds.

features/org.eclipse.rap.tools.feature/.forceQualifierUpdate

@@ -1 +1 @@
-2022-10-04T12:00:00+00:00
+2022-10-26T12:00:00+00:00

features/org.eclipse.rap.tools.feature/feature.xml

@@ -167,6 +167,13 @@
          version="0.0.0"
          unpack="false"/>
 
+   <plugin
+         id="org.slf4j.api"
+         download-size="0"
+         install-size="0"
+         version="0.0.0"
+         unpack="false"/>
+
    <plugin
          id="jakarta.servlet-api"
          download-size="0"

releng/org.eclipse.rap.tools.build/pom.xml

@@ -29,7 +29,8 @@
     <baseline-repository>http://download.eclipse.org/rt/rap/nightly/tooling/</baseline-repository>
      -->
     <jetty-repo.url>https://download.eclipse.org/webtools/jetty/10.0.12/repository/</jetty-repo.url>
-    <platform-repo.url>https://download.eclipse.org/eclipse/updates/4.26-I-builds/I20220928-1800/</platform-repo.url>
+    <orbit-repo.url>https://download.eclipse.org/tools/orbit/downloads/2022-12/</orbit-repo.url>
+    <platform-repo.url>https://download.eclipse.org/eclipse/updates/4.26-I-builds/I20221020-1800/</platform-repo.url>
     <license-repo.url>https://download.eclipse.org/cbi/updates/license/</license-repo.url>
     <test-workspace-dir>${java.io.tmpdir}/rap-tools-test-workspace</test-workspace-dir>
     <!-- The build type, N for nighty builds, S for stable builds. S-builds will be signed. -->
@@ -47,6 +48,11 @@
       <layout>p2</layout>
       <url>${platform-repo.url}</url>
     </repository>
+    <repository>
+      <id>orbit-repo</id>
+      <layout>p2</layout>
+      <url>${orbit-repo.url}</url>
+    </repository>
     <repository>
       <id>jetty-repo</id>
       <layout>p2</layout>