add check if release exists

.gitea/workflows/check_releases.yaml

@@ -39,6 +39,22 @@ jobs:
           echo "::set-output name=latest_tag::${LATEST_TAG}"
           echo "::set-output name=publish_date::${PUBLISH_DATE}"
 
+      # 1. Check if the release already exists on Gitea
+      - name: Check if Release Exists
+        id: check_release
+        run: |
+          HTTP_STATUS=$(curl -s -o /dev/null -w "%{http_code}" \
+            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases/tags/${{ github.ref_name }}")
+
+          if [ "$HTTP_STATUS" -eq 200 ]; then
+            echo "Release already exists. Skipping step."
+            echo "exists=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Release does not exist."
+            echo "exists=false" >> "$GITHUB_OUTPUT"
+          fi
+
       - name: Download latest release
         run: |
           DOWNLOAD_URL="https://github.com/prefix-dev/pixi/releases/download/${{ steps.check_release.outputs.latest_tag }}/pixi-x86_64-unknown-linux-musl.tar.gz"