Don't put -- into Python shebangs

%py3_shebang_flags should not contain the leading dash, but %py3_shbang_opts does.

The shebengs were:

    #! /usr/bin/python3 --

That worked. By accident. But when we added P to the flags:

    https://fedoraproject.org/wiki/Changes/PythonSafePath

The shebang was:

    #! /usr/bin/python3 --P

And that no longer works.

ansible-core.spec

@@ -12,7 +12,7 @@
 Name: ansible-core
 Summary: A radically simple IT automation system
 Version: 2.13.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 # The main license is GPLv3+. Many of the files in lib/ansible/module_utils
 # are BSD licensed. There are various files scattered throughout the codebase
@@ -128,7 +128,7 @@ sed '/^mock$/d' test/lib/ansible_test/_data/requirements/units.txt > ${temp}
 
 %build
 # disable the python -s shbang flag as we want to be able to find non system modules
-%global py3_shebang_flags %(echo %{py3_shbang_opts} | sed 's/s//')
+%global py3_shebang_flags %(echo %{py3_shebang_flags} | sed 's/s//')
 %py3_shebang_fix .
 
 # Build manpages
@@ -247,6 +247,9 @@ make PYTHON=%{python3} tests-py3
 %endif
 
 %changelog
+* Thu Jul 07 2022 Miro Hrončok <mhroncok@redhat.com> - 2.13.1-2
+- Don't put -- into Python shebangs
+
 * Wed Jun 22 2022 Maxwell G <gotmax@e.email> - 2.13.1-1
 - Update to 2.13.1 (rhbz#2096312).