github/workflows: run CodeQL job on Arch Linux

Hopefully this will fix the unrecognized compiler flag issues.

.github/workflows/lone.yml

@@ -73,14 +73,17 @@ jobs:
   analyze:
     name: CodeQL analysis
     runs-on: ubuntu-latest
+    container: archlinux:base-devel
+
     permissions:
       actions: read
       contents: read
       security-events: write
+
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'cpp' ]
+        language: c-cpp
 
     steps:
     - name: Checkout lone repository