Adjust the benchmark message argument, again.

.github/workflows/rapier-ci-bench.yml

@@ -18,14 +18,14 @@ jobs:
       BENCHBOT_TARGET_COMMIT: ${{ github.event.pull_request.head.sha }}
       BENCHBOT_SHA: ${{ github.sha }}
       BENCHBOT_HEAD_REF: ${{github.head_ref}}
-      BENCHBOT_OTHER_BACKENDS: 0
+      BENCHBOT_OTHER_BACKENDS: false
     runs-on: ubuntu-latest
     steps:
       - name: Find commit SHA
         if: github.ref == 'refs/heads/master'
         run: |
           echo "::set-env name=BENCHBOT_TARGET_COMMIT::$BENCHBOT_SHA"
-          echo "::set-env name=BENCHBOT_OTHER_BACKENDS::1"
+          echo "::set-env name=BENCHBOT_OTHER_BACKENDS::true"
       - name: Send 3D bench message
         shell: bash
         run: curl -u $BENCHBOT_AMQP_USER:$BENCHBOT_AMQP_PASS