Keep Kotlin build workflow focused on the default extractor

Restore the workflow's existing scope; the full extractor version matrix remains covered by the official build.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jketema

.github/workflows/kotlin-build.yml

@@ -23,9 +23,6 @@ jobs:
       - uses: actions/checkout@v5
       - run: |
           bazel query //java/kotlin-extractor/...
-          # Check the default version and the older language versions we still support.
+          # only build the default version as a quick check that we can build from `codeql`
           # the full official build will be checked by QLucie
-          bazel build \
-            //java/kotlin-extractor \
-            //java/kotlin-extractor:codeql-extractor-kotlin-standalone-1.8.0 \
-            //java/kotlin-extractor:codeql-extractor-kotlin-embeddable-1.9.20-Beta
+          bazel build //java/kotlin-extractor