Reset extension

.github/workflows/build.yml

@@ -52,6 +52,7 @@ jobs:
         mkdir -p compressed_artifacts
         for platform in windows-amd64.exe linux-amd64 linux-arm64 darwin-arm64; do
           # check if windows
+          extension=""
           if [[ $platform == *".exe" ]]; then
             platform=$(echo $platform | sed 's/.exe//g')
             extension=".exe"