Fix/url masking (#129)

fix: mask URL in slack

Author: vgkowski

.github/workflows/release.yml

@@ -92,10 +92,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: publish latest release
+        env:
+          SLACK_URL: ${{ secrets.SLACK_URL }}
         run: |
           curl -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/aws-samples/aws-analytics-reference-architecture/releases/latest > release.json
           VERSION=$( jq -r '.name' release.json )
           CONTENT=$( jq -r '.body' release.json )
           jq -n --arg version "$VERSION" --arg content "$CONTENT" '{"release-version": $version, "release-content": $content}' > body.json
-          curl --location --request POST 'https://hooks.slack.com/workflows/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' \
+          curl --location --request POST $SLACK_URL \
           --header 'Content-Type: application/json' --data @body.json