ci: fix asset naming collisions by including platform/version in filenames

Author: harrygav

.github/workflows/ReleasePipeline.yml

@@ -22,9 +22,16 @@ jobs:
           branch: ${{ github.event.release.target_commitish || github.ref_name }}
           path: artifacts
 
-      - name: Gzip artifacts/extensions
+      - name: Rename and Gzip artifacts
         run: |
-          find artifacts -name "*.duckdb_extension" -exec gzip -f {} \;
+          # Move files out of subdirectories and rename them to include the artifact name
+          # This prevents name collisions when uploading to GitHub Releases
+          for file in $(find artifacts -name "*.duckdb_extension"); do
+            dir=$(basename $(dirname "$file"))
+            mv "$file" "artifacts/${dir}.duckdb_extension"
+          done
+          # Gzip the renamed files
+          gzip artifacts/*.duckdb_extension
 
       - name: Upload Assets to Release
         uses: softprops/action-gh-release@v1