Extract msg from env var to defining in run

.github/workflows/comment.yml

@@ -16,19 +16,33 @@ jobs:
         env:
           workflow_run: <workflow_run_id>
           diff_id: <diff_id>
-          msg: |
-            This PR introduces a change in some Merlin query response(s), which has been captured by the fuzzy-test CI. The fuzzy-test diffs of the CI have been approved. Info about the diffs that have been approved:
-            - Distilled data:
-                - Diff: https://github.com/pitag-ha/merlin/suites//artifacts/
-                - Diff 256-sha: {{ steps.category_data_diff_hash.outputs.hash }}
-                - Data on target branch (`master` at (...)): (...)
-                - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
-            - Full responses:
-                - Diff: (...)
-                - Diff 256-sha: my-full-responses-sha
-                - Data on target branch (`master` at (...)): (...)
-                - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
+          # msg: |
+          #   This PR introduces a change in some Merlin query response(s), which has been captured by the fuzzy-test CI. The fuzzy-test diffs of the CI have been approved. Info about the diffs that have been approved:
+          #   - Distilled data:
+          #       - Diff: https://github.com/pitag-ha/merlin/suites//artifacts/
+          #       - Diff 256-sha: {{ steps.category_data_diff_hash.outputs.hash }}
+          #       - Data on target branch (`master` at (...)): (...)
+          #       - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
+          #   - Full responses:
+          #       - Diff: (...)
+          #       - Diff 256-sha: my-full-responses-sha
+          #       - Data on target branch (`master` at (...)): (...)
+          #       - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
         run: |
+          msg= $( cat <<EOF
+          ONe more: This PR introduces a change in some Merlin query response(s), which has been captured by the fuzzy-test CI. The fuzzy-test diffs of the CI have been approved. Info about the diffs that have been approved:
+          - Distilled data:
+              - Diff: https://github.com/pitag-ha/merlin/suites/$workflow_run/artifacts/$diff_id
+              - Diff 256-sha: {{ steps.category_data_diff_hash.outputs.hash }}
+              - Data on target branch (\`master\` at (...)): (...)
+              - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
+          - Full responses:
+              - Diff: (...)
+              - Diff 256-sha: my-full-responses-sha
+              - Data on target branch (\`master\` at (...)): (...)
+              - Data on PR merge branch, i.e. merge result of source branch (at (...)) and target branch: (...)
+          EOF
+          )
           jq -n --arg msg "$msg" '{ body: $msg }' | tee -a body.json
 
       - name: Write comment on PR