ci: test_private_tasks uses 8c32g for testing (#18406)

Author: KKould

.github/workflows/reuse.linux.yml

@@ -189,7 +189,7 @@ jobs:
       - self-hosted
       - X64
       - Linux
-      - 2c8g
+      - 8c32g
       - "${{ inputs.runner_provider }}"
     steps:
       - uses: actions/checkout@v4