dotnet/update.sh: fix error when output path contains spaces

Fixes: #367413

pkgs/development/compilers/dotnet/update.sh

@@ -283,7 +283,7 @@ update() {
     if [ "$patch_specified" == false ] && [ -f "$output" ]; then
         local -a versions
         IFS= readarray -d '' versions < <(
-            nix-instantiate --eval --json -E "with (import $output {
+            nix-instantiate --eval --json -E "{ output }: with (import output {
                 buildAspNetCore = { ... }: {};
                 buildNetSdk = { version, ... }: { inherit version; };
                 buildNetRuntime = { version, ... }: { inherit version; };
@@ -291,7 +291,7 @@ update() {
             }); (x: builtins.deepSeq x x) [
                 runtime_${major_minor_underscore}.version
                 sdk_${major_minor_underscore}.version
-            ]" | jq --raw-output0 .[])
+            ]" --argstr output "$output" | jq --raw-output0 .[])
         if [[ "${versions[0]}" == "$major_minor_patch" && "${versions[1]}" == "${sdk_versions[0]}" ]]; then
             echo "Nothing to update."
             return