Suppress testing modules from CodeQL analysis

Author: trask

.github/codeql/codeql-config.yml

@@ -0,0 +1,2 @@
+paths-ignore:
+  - "**/testing/src/main/java/**"

.github/workflows/codeql.yml

@@ -69,6 +69,7 @@ jobs:
           # using "linked" helps to keep up with the linked Kotlin support
           # see https://github.com/github/codeql-action/issues/1555#issuecomment-1452228433
           tools: linked
+          config-file: ./.github/codeql/codeql-config.yml
 
       - name: Assemble
         if: matrix.language == 'java'