add worker binaries to ci

Signed-off-by: Charles Ferrell <charlie@manta.network>

.github/workflows/integration_test_manta.yml

@@ -11,6 +11,8 @@ concurrency:
 env:
   DEBIAN_FRONTEND: noninteractive
   POLKADOT_BINARY: https://github.com/paritytech/polkadot-sdk/releases/download/polkadot-v1.7.0/polkadot
+  POLKADOT_EXECUTE: https://github.com/paritytech/polkadot-sdk/releases/download/polkadot-v1.7.0/polkadot-execute-worker
+  POLKADOT_PREPARE: https://github.com/paritytech/polkadot-sdk/releases/download/polkadot-v1.7.0/polkadot-prepare-worker
 jobs:
   print-rust-versions:
     if: contains(github.event.pull_request.labels.*.name, 'A-manta')
@@ -130,7 +132,11 @@ jobs:
         run: |
           apt update && apt install -y curl jq wget git
           curl -L -o $HOME/.local/bin/polkadot ${{ env.POLKADOT_BINARY }}
+          curl -L -o $HOME/.local/bin/polkadot-execute-worker ${{ env.POLKADOT_EXECUTE }}
+          curl -L -o $HOME/.local/bin/polkadot-prepare-worker ${{ env.POLKADOT_PREPARE }}
           chmod +x $HOME/.local/bin/polkadot
+          chmod +x $HOME/.local/bin/polkadot-execute-worker
+          chmod +x $HOME/.local/bin/polkadot-prepare-worker
           ls -ahl $HOME/.local/bin/
       - name: Install dasel cli
         shell: bash