chore(ci): update usage of slab-github-runner to last version

.github/workflows/benchmark.yml

@@ -26,16 +26,16 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       runner-name: ${{ steps.start-instance.outputs.label }}
-      instance-id: ${{ steps.start-instance.outputs.ec2-instance-id }}
     steps:
       - name: Start instance
         id: start-instance
-        uses: zama-ai/slab-github-runner@ab65ad70bb9f9e9251e4915ea5612bcad23cd9b1
+        uses: zama-ai/slab-github-runner@1dced74825027fe3d481392163ed8fc56813fb5d
         with:
           mode: start
           github-token: ${{ secrets.SLAB_ACTION_TOKEN }}
           slab-url: ${{ secrets.SLAB_BASE_URL }}
           job-secret: ${{ secrets.JOB_SECRET }}
+          backend: aws
           profile: bench
 
   fft-benchmarks:
@@ -166,13 +166,12 @@ jobs:
     steps:
       - name: Stop instance
         id: stop-instance
-        uses: zama-ai/slab-github-runner@ab65ad70bb9f9e9251e4915ea5612bcad23cd9b1
+        uses: zama-ai/slab-github-runner@1dced74825027fe3d481392163ed8fc56813fb5d
         with:
           mode: stop
           github-token: ${{ secrets.SLAB_ACTION_TOKEN }}
           slab-url: ${{ secrets.SLAB_BASE_URL }}
           job-secret: ${{ secrets.JOB_SECRET }}
-          profile: bench
           label: ${{ needs.setup-ec2.outputs.runner-name }}
 
       - name: Slack Notification

ci/slab.toml

@@ -1,7 +1,4 @@
-[profile.bench]
+[backend.aws.bench]
 region = "eu-west-1"
 image_id = "ami-0f96f17e9f652c6ab"
 instance_type = "hpc7a.96xlarge"
-
-[command]
-# Slab needs at least an empty [command] as placeholder to parse this file.