Merge pull request github#18961 from michaelnebel/csharp/ccr-local-not-disposed

C#: Add `cs/local-not-disposed` to the CCR suite.

Author: michaelnebel

csharp/ql/src/codeql-suites/csharp-ccr.qls

@@ -8,3 +8,4 @@
       - cs/self-assignment
       - cs/inefficient-containskey
       - cs/call-to-object-tostring
+      - cs/local-not-disposed