ci: set RUNNER_ENVIRONMENT=github-hosted for free-disk-space script

Author: pantha704

.github/workflows/abi-cafe.yml

@@ -51,6 +51,8 @@ jobs:
 
       - name: Free disk space
         if: runner.os == 'Linux'
+        env:
+          RUNNER_ENVIRONMENT: github-hosted
         run: .github/scripts/free-disk-space.sh
 
       - name: Cache cargo target dir