Fix trigger-publish.yml to quote the commit hash (temporalio#592)

.github/workflows/trigger-publish.yml

@@ -1,6 +1,7 @@
 name: 'Trigger Docker image build'
 
 on:
+  workflow_dispatch:
   release:
     types: [published]
 
@@ -34,5 +35,6 @@ jobs:
           WORKFLOW_ID: update-submodules.yml
           REPO: ${{ toJSON('cli') }}
           BRANCH: ${{ toJSON(steps.get_branch.outputs.branch) }}
+          COMMIT: ${{ toJSON(github.sha) }}
         run: |
-          curl -fL -X POST -H "Accept: application/vnd.github.v3+json" -H "Authorization: token $PAT" "https://api.github.com/repos/$PARENT_REPO/actions/workflows/$WORKFLOW_ID/dispatches" -d '{"ref":'"$PARENT_BRANCH"', "inputs": { "repo":'"$REPO"', "branch":'"$BRANCH"', "commit": '"$GITHUB_SHA"' }}'
+          curl -fL -X POST -H "Accept: application/vnd.github.v3+json" -H "Authorization: token $PAT" "https://api.github.com/repos/$PARENT_REPO/actions/workflows/$WORKFLOW_ID/dispatches" -d '{"ref":'"$PARENT_BRANCH"', "inputs": { "repo":'"$REPO"', "branch":'"$BRANCH"', "commit": '"$COMMIT"' }}'