ci: Reduce GAR builder disk usage by moving keys around. (#3161)

## What ❔

Move keys from prover to circuit-prover as the build sequentially.
Remove prover-gar image after it being uploaded.

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## Why ❔

To allow running this on a machine with 100G disk.
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## Checklist

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- [ ] Tests for the changes have been added / updated.
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lint`.

.github/workflows/build-prover-fri-gpu-gar-and-circuit-prover-gpu-gar.yml

@@ -28,7 +28,6 @@ jobs:
       - name: Download Setup data
         run: |
           gsutil -m rsync -r gs://matterlabs-setup-data-us/${{ inputs.setup_keys_id }} docker/prover-gpu-fri-gar
-          cp -v docker/prover-gpu-fri-gar/*.bin docker/circuit-prover-gpu-gar/
 
       - name: Login to us-central1 GAR
         run: |
@@ -70,6 +69,14 @@ jobs:
             --tag europe-docker.pkg.dev/matterlabs-infra/matterlabs-docker/prover-fri-gpu-gar:2.0-${{ inputs.protocol_version }}-${{ inputs.image_tag_suffix }} \
             us-docker.pkg.dev/matterlabs-infra/matterlabs-docker/prover-fri-gpu-gar:2.0-${{ inputs.protocol_version }}-${{ inputs.image_tag_suffix }}
 
+      - name: Remove prover-gpu-fri-gar image to free space
+        run: |
+          docker image rm us-docker.pkg.dev/matterlabs-infra/matterlabs-docker/prover-fri-gpu-gar:2.0-${{ inputs.protocol_version }}-${{ inputs.image_tag_suffix }}
+
+      - name: Move Setup data from prover-gpu-fri-gar to circuit-prover-gpu-gar
+        run: |
+          mv -v docker/prover-gpu-fri-gar/*.bin docker/circuit-prover-gpu-gar/
+
       - name: Build and push circuit-prover-gpu-gar
         uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
         with: