add cpp to CodeQL (#235)

* update codeQL from v2 to v3

remove workflow_dispatch from codeql.yml

* add cpp to codeql.yml

Author: kagahd

.github/workflows/codeql.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'python' ]
+        language: [ 'python', 'cpp' ]
         # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
         # Use only 'java' to analyze code written in Java, Kotlin or both
         # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both