update

Remove CodeQL workflow, update REUSE action

- Removed the entire CodeQL GitHub Action workflow, including its trigger events (push, pull requests on `main`, and scheduled), permissions (read for actions and contents, write for security events), the "Analyze" job (running on `ubuntu-latest`), strategy (fail-fast false, language matrix for "cpp"), and steps (checkout, CodeQL init, autobuild, and analysis).
- Updated the REUSE GitHub Action workflow by upgrading the checkout action from version 3 to version 4 in the compliance check job.

.github/workflows/reuse.yml

@@ -13,6 +13,6 @@ jobs:
   REUSE:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: REUSE Compliance Check
         uses: fsfe/reuse-action@v1