fix: add reference to CI workflow to fix error (#839)

Co-authored-by: ForwardSlashBack <ForwardSlashBack@users.noreply.github.com>

Author: ForwardSlashBack

.github/workflows/runner-start.yml

@@ -40,7 +40,7 @@ jobs:
           repository: icon-project/ibc-relay
       - name: Start EC2 instance
         id: start
-        uses: machulav/ec2-github-runner
+        uses: machulav/ec2-github-runner@v2
         with:
           mode: start
           github-token: ${{ secrets.GH_RUNNER_PAT }}
@@ -49,4 +49,4 @@ jobs:
           subnet-id: subnet-f1fcd4df
           security-group-id: sg-03cb8034e27e1caeb
           pre-runner-script: |
-            ./build.sh ${{ inputs.relayer_version == '' && steps.relay.outputs.release || inputs.relayer_version }}
+            ./build.sh ${{ inputs.relayer_version == '' && steps.relay.outputs.release || inputs.relayer_version }}