Increase volume size to avoid out of disk space

Author: raulcd

.github/workflows/cpp_extra.yml

@@ -114,7 +114,7 @@ jobs:
               -e ARROW_CXX_FLAGS_DEBUG="-O1"
               -e ARROW_LARGE_MEMORY_TESTS=ON
               -e BUILD_WARNING_LEVEL=PRODUCTION
-            runs-on: "runs-on=${{ github.run_id }}/family=x8i.2xlarge/spot=capacity-optimized"
+            runs-on: "runs-on=${{ github.run_id }}/family=x8i.2xlarge/volume=80gb/spot=capacity-optimized"
             title: AMD64 Ubuntu Large Memory Tests
           - image: conda-cpp
             run-options: >-