build: temporary workaround to a GH issue with C++20

.github/workflows/sanitizer.yml

@@ -17,6 +17,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+    # temporary workaround for https://github.com/actions/runner-images/issues/8659
+    - uses: mjp41/workaround8649@c8550b715ccdc17f89c8d5c28d7a48eeff9c94a8
     - name: Compile tests
       working-directory: build
       env: