Attempt bind mount to address cache write issues

Restoring the cache currently fails with permission issues.
This is an attempt to address that.

Author: rvermeulen

.github/workflows/codeql.yml

@@ -25,6 +25,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+
+      - name: Bind mount Nix store
+        run: |
+          mkdir "$RUNNER_TEMP/nix" 
+          sudo mount --bind "$RUNNER_TEMP/nix" /nix
+
       - name: Cache Nix Store
         uses: actions/cache@v4
         id: cache