ci: Pin scapy version.

The latest scapy version (2.6.0) fails to properly evaulate if
.config directory already exists [0]. Pin the version to 2.5.0
for the time being as that one was working without any issues.

[0] secdev/scapy#4546
Signed-off-by: Ales Musil <amusil@redhat.com>
Signed-off-by: Mark Michelson <mmichels@redhat.com>

utilities/containers/py-requirements.txt

@@ -1,6 +1,6 @@
 flake8>=6.1.0
 meson>=1.4,<1.5
-scapy
+scapy==2.5.0
 sphinx<8.0 # https://github.com/sphinx-doc/sphinx/issues/12711
 setuptools
 pyelftools