ci: fix gsutil command for download fflonk key for proof-fri-gpu-compressor (#3441)

## What ❔
Fix gsutil command for download fflonk key

## Why ❔
It's broken

## Checklist

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- [x] PR title corresponds to the body of PR (we generate changelog
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- [x] Tests for the changes have been added / updated.
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lint`.

Author: otani88

.github/workflows/build-proof-fri-gpu-compressor-gar.yml

@@ -27,8 +27,8 @@ jobs:
 
       - name: Download FFLONK key and setup data
         run: |
-          gsutil -m rsync -r gs://matterlabs-setup-keys-us/setup-keys/setup_fflonk_compact.key docker/proof-fri-gpu-compressor-gar
           gsutil -m rsync -r gs://matterlabs-setup-data-us/${{ inputs.setup_keys_id }} docker/proof-fri-gpu-compressor-gar
+          gsutil -m cp -r gs://matterlabs-setup-keys-us/setup-keys/setup_fflonk_compact.key docker/proof-fri-gpu-compressor-gar
 
       - name: Login to us-central1 GAR
         run: |