gitlab-ci: ignore failure to install "python-setuptools" on debian

python-setuptools is now gone from debian:testing ([1], [2]):

    Package python-setuptools is not available, but is referred to by another package.
    This may mean that the package is missing, has been obsoleted, or
    is only available from another source

    E: Package 'python-setuptools' has no installation candidate

This package is entirely optional. Fix the failure by ignoring any failure to
install the package.

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=938168
[2] https://tracker.debian.org/news/1391360/python-setuptools-removed-from-testing/

.gitlab-ci.yml

@@ -54,8 +54,8 @@ variables:
   # This is done by running `ci-fairy generate-template` and possibly bumping
   # ".default_tag".
   FEDORA_TAG:  '2022-10-07.0-192f1fb71e29'
-  UBUNTU_TAG:  '2022-10-07.0-8acbcc45f1a8'
-  DEBIAN_TAG:  '2022-10-07.0-8acbcc45f1a8'
+  UBUNTU_TAG:  '2022-10-07.0-f84fc9f24236'
+  DEBIAN_TAG:  '2022-10-07.0-f84fc9f24236'
   CENTOS_TAG:  '2022-10-07.0-192f1fb71e29'
   ALPINE_TAG:  '2022-10-07.0-e38255cda228'
 

contrib/debian/REQUIRED_PACKAGES

@@ -70,7 +70,6 @@ install \
     policykit-1 \
     ppp \
     ppp-dev \
-    python-setuptools \
     python3-dbus \
     python3-gi \
     python3-pip \
@@ -82,6 +81,11 @@ install \
     \
     #end
 
+install_ignore_missing \
+    python-setuptools \
+    \
+    #end
+
 # Old. Present in Ubuntu 20.04, not in Ubuntu 22.04
 # software-properties-common
 install_ignore_missing \