use autobuild for codeql

Author: jenschude

.github/workflows/codeql.yml

@@ -46,7 +46,7 @@ jobs:
         - language: actions
           build-mode: none
         - language: java-kotlin
-          build-mode: none # This mode only analyzes Java. Set this to 'autobuild' or 'manual' to analyze Kotlin too.
+          build-mode: autobuild # This mode only analyzes Java. Set this to 'autobuild' or 'manual' to analyze Kotlin too.
         # CodeQL supports the following values keywords for 'language': 'actions', 'c-cpp', 'csharp', 'go', 'java-kotlin', 'javascript-typescript', 'python', 'ruby', 'swift'
         # Use `c-cpp` to analyze code written in C, C++ or both
         # Use 'java-kotlin' to analyze code written in Java, Kotlin or both