ci: Update GitHub Actions workflow to use new output and state syntax

Author: frankwiles

.github/workflows/release.yml

@@ -80,6 +80,16 @@ jobs:
         uses: release-drafter/release-drafter@v5
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          output: CHANGELOG.md
+
+      - name: Set Release Body
+        if: matrix.platform.os == 'ubuntu-latest'
+        run: |
+          body="$(cat CHANGELOG.md)"
+          echo "RELEASE_BODY<<EOF" >> $GITHUB_ENV
+          echo "$body" >> $GITHUB_ENV
+          echo "EOF" >> $GITHUB_ENV
 
       - name: Upload binaries to release
         uses: svenstaro/upload-release-action@v2
@@ -89,7 +99,7 @@ jobs:
           asset_name: ${{ matrix.platform.asset_name }}
           tag: ${{ github.ref }}
           overwrite: true
-          body: ${{ steps.changelog.outputs.body }}
+          body: ${{ env.RELEASE_BODY }}
 
       - name: Upload SHA256 checksums
         uses: svenstaro/upload-release-action@v2