Use the default flags for Python in the shebang of /usr/bin/cura

Fixes: https://bugzilla.redhat.com/2117729

cura.spec

@@ -4,7 +4,7 @@
 Name:           cura
 Epoch:          1
 Version:        %{major_minor_version}.%{patch_version}
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        3D printer / slicing GUI
 
 # https://lists.fedoraproject.org/archives/list/legal@lists.fedoraproject.org/thread/MOUNX6I3POCDMYWBNJ7JPLLIKVYWVRBJ/
@@ -139,6 +139,9 @@ rm -r %{buildroot}%{_prefix}/lib/cura/plugins/{SentryLogger,UFPReader,UFPWriter}
 # Bytecompile the plugins
 %py_byte_compile %{__python3} %{buildroot}%{_prefix}/lib/cura
 
+# Use the default flags in the shebang
+%py3_shebang_fix %{buildroot}%{_bindir}/*
+
 %find_lang cura
 %find_lang fdmextruder.def.json
 %find_lang fdmprinter.def.json
@@ -166,6 +169,10 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/%{reverse_dns_name}.d
 %{_prefix}/lib/%{name}
 
 %changelog
+* Mon Aug 22 2022 Miro Hrončok <mhroncok@redhat.com> - 1:4.13.1-5
+- Use the default flags for Python in the shebang of /usr/bin/cura
+- Fixes: rhbz#2117729
+
 * Wed Jul 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1:4.13.1-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild