update to ELK 0.9.1, new KLighD Setup artifact, skip generating poms for

P2 dependencies.

build/pom.xml

@@ -10,7 +10,7 @@
 
   <!-- Define a few properties used throughout all build profiles. -->
   <properties>
-    <elk-version>0.9.0</elk-version>
+    <elk-version>0.9.1</elk-version>
     <gson-version>2.10.1</gson-version>
     <guice-version>7.0.0</guice-version>
     <klighd-version>2.3.0.v20230606</klighd-version>
@@ -302,6 +302,15 @@
 
     <pluginManagement>
       <plugins>
+        <!-- skip generating poms for P2 dependencies managed by tycho. Avoids this issue: https://www.eclipse.org/forums/index.php?t=msg&th=1111563&goto=1854788&  --> 
+        <plugin>
+          <groupId>org.eclipse.tycho</groupId>
+          <artifactId>tycho-packaging-plugin</artifactId>
+          <version>${tycho-version}</version>
+          <configuration>
+            <skipPomGeneration>true</skipPomGeneration>
+          </configuration>
+        </plugin>
 
         <!-- maven xtend plugin to tell maven how to compile xtend code -->
         <plugin>

plugins/de.cau.cs.kieler.pragmatics.language.server/pom.xml

@@ -102,7 +102,7 @@
     </dependency>
     <dependency>
       <groupId>de.cau.cs.kieler.klighd</groupId>
-      <artifactId>de.cau.cs.kieler.klighd.standalone</artifactId>
+      <artifactId>de.cau.cs.kieler.klighd.setup</artifactId>
       <version>${klighd-version}</version>
     </dependency>
     <dependency>