Don't use deprecated commands

.github/workflows/main.yml

@@ -27,9 +27,10 @@ jobs:
           pattern: "${{ env.VERSION }}:"  # Look for the version header (e.g., # 0.6.15-alpha:)
           file: Changelog.md
 
-      # Set the markdown output of the job
+      # Set the markdown output using environment files
       - name: Set markdown output
-        run: echo "::set-output name=markdown::$(echo '${{ steps.changelog.outputs.markdown }}')"
+        run: |
+          echo "markdown=${{ steps.changelog.outputs.markdown }}" >> $GITHUB_ENV
           
   publish-tauri:
     needs: extract-changelog
@@ -54,7 +55,7 @@ jobs:
 
       - name: Debug the extracted release notes
         run: |
-          echo "Extracted Release Notes: ${{ needs.extract-changelog.outputs.markdown }}"
+          echo "Extracted Release Notes: ${{ env.markdown }}"
 
       - name: install dependencies (ubuntu only)
         if: matrix.platform == 'ubuntu-22.04' # This must match the platform value defined above.
@@ -141,7 +142,7 @@ jobs:
         with:
           tagName: "app-v${{ env.VERSION }}"  # Use the original version tag for the release
           releaseName: "Lightningbeam v${{ env.VERSION }}"
-          releaseBody: "${{ needs.extract-changelog.outputs.markdown }}"
+          releaseBody: "${{ env.markdown }}"
           releaseDraft: true  # Set to true if you want the release to be a draft
           prerelease: true
           args: ${{ matrix.args }}