Use exact cdt-lsp release api-baseline

as mentioned here:
eclipse-cdt#265 (comment)

pom.xml

@@ -22,8 +22,8 @@
   <cbi-plugins.version>1.4.3</cbi-plugins.version>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <tycho.scmUrl>scm:git:https://github.com/eclipse-cdt/cdt-lsp</tycho.scmUrl>
-  <comparator.repo>https://download.eclipse.org/tools/cdt/releases/cdt-lsp-latest/</comparator.repo>
-  <api-baseline.repo>https://download.eclipse.org/tools/cdt/releases/cdt-lsp-latest/</api-baseline.repo>
+  <comparator.repo>https://download.eclipse.org/tools/cdt/releases/cdt-lsp-1.1/</comparator.repo>
+  <api-baseline.repo>https://download.eclipse.org/tools/cdt/releases/cdt-lsp-1.1/</api-baseline.repo>
   <api-baseline.repo.simrel>https://download.eclipse.org/releases/2024-03/</api-baseline.repo.simrel>
     <!-- these parameters are to control baseline replace and compare. On a local build you want
        to avoid baseline replace and compare, especially if you have different versions of Java than