Move CodeQL action (#230)

This was sitting in a subdirectory, so it won't run.

Author: jhutchings1

.github/workflows/workflows/codeql.yml renamed to .github/workflows/codeql.yml

@@ -43,4 +43,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v1