- tumbleweed build config update

- support the %load macro
- improve container filename generation (docker)
- fix hanging curl calls during build (docker)
- productcompose: fix milestone query

OBS-URL: https://build.opensuse.org/package/show/openSUSE:Tools/build?expand=0&rev=514

build.spec

@@ -28,7 +28,7 @@ Name:           %{__pkg_name}
 Summary:        A Script to Build SUSE Linux RPMs
 License:        GPL-2.0-only OR GPL-3.0-only
 Group:          Development/Tools/Building
-Version:        20240516
+Version:        20240612
 Release:        0
 Source:         obs-build-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build