python-gssapi incompatible With Cython 3.1

With the release of Cython, the installment of python-gssapi broke on Linux systems:

  building 'gssapi.raw.misc' extension
  creating build/temp.linux-x86_64-cpython-38/gssapi/raw
  gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -I/opt/rh/rh-python38/root/usr/include -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -I/opt/rh/rh-python38/root/usr/include -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -Igssapi/raw -I/opt/rh/rh-python38/root/usr/include/python3.8 -c gssapi/raw/misc.c -o build/temp.linux-x86_64-cpython-38/gssapi/raw/misc.o -DHAS_GSSAPI_EXT_H
  gssapi/raw/misc.c: In function ‘__pyx_pw_6gssapi_3raw_4misc_3inquire_names_for_mech’:
  gssapi/raw/misc.c:3284:7: error: ‘for’ loop initial declarations are only allowed in C99 mode
         for (Py_ssize_t i = __pyx_nargs; i < 1; i++) {

According to Cython devs, Cython 3.1+ requires C99 compatible C compiler:
https://github.com/cython/cython/issues/6861#issuecomment-2868999325

Reproduce the Linux installation with Cython 3.1+ and inspect the generated gssapi/raw/misc.c build path shown in the error. Check the Cython and compiler configuration involved; done means python-gssapi installs successfully with the affected Cython release on Linux.