fix(l1): fix hive report workflow (#1262)

**Motivation**

The step that builds the report and saves it to an output so the report
is not being published.

.github/workflows/hive_coverage.yaml

@@ -51,25 +51,13 @@ jobs:
         id: report
         run: |
           cargo run -p hive_report > results.md
-          echo "content=$(cat results.md)" >> $GITHUB_OUTPUT
 
       - name: Post results in summary
         run: |
-          echo "# Hive coverage report\n\n" >> $GITHUB_STEP_SUMMARY
-          $(cat results.md) >> $GITHUB_STEP_SUMMARY
+          echo "# Hive coverage report" >> $GITHUB_STEP_SUMMARY
+          cat results.md >> $GITHUB_STEP_SUMMARY
 
       - name: Post results to slack
-        uses: slackapi/[email protected]
-        with:
-          webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
-          webhook-type: incoming-webhook
-          payload: |
-            blocks:
-              - type: "header"
-                text:
-                  type: "plain_text"
-                  text: Hive coverage report
-              - type: "section"
-                text:
-                  type: "mrkdwn"
-                  text: ${{steps.report.outputs.content}}
+        env:
+          url: ${{ secrets.SLACK_WEBHOOK_URL }}
+        run: sh publish.sh

publish.sh

@@ -0,0 +1,22 @@
+curl -X POST $url \
+-H 'Content-Type: application/json; charset=utf-8' \
+--data @- <<EOF
+$(jq -n --arg text "$(cat results.md)" '{
+    "blocks": [
+        {
+            "type": "header",
+            "text": {
+                "type": "plain_text",
+                "text": "Daily report"
+            }
+        },
+        {
+            "type": "section",
+            "text": {
+                "type": "mrkdwn",
+                "text": $text
+            }             
+        }
+    ]
+}')
+EOF