copr-rpmbuild config dislikes mock-core-configs 40.2

[praiskup]

We use config_opts[f"{package_manager}"] = ... which is unnecessary, and breaks as the jinja from this pr is not expanded.

[praiskup]

I installed this hot-fix:

--- /etc/copr-rpmbuild/mock.cfg.j2      2023-11-23 00:00:00.000000000 +0000
+++ /etc/copr-rpmbuild/mock.cfg.j2      2024-02-16 19:47:06.594883148 +0000
@@ -40,7 +40,7 @@
 {%- endif %}
 
 {% if repos %}
-config_opts[f"{config_opts.package_manager}.conf"] += """
+config_opts["dnf.conf"] += """
 {% for repo in repos %}
 [{{ repo["id"] }}]
 name='{{ repo["name"] }}'

This works because the newer versions of Mock have yum.conf equivalent to dnf.conf.