manager: python and poetry upgrade

• ci:
  • unit tests for python3.11 added
  • image upgrade to fedora 38 with python3.11
• poetry: upgrade to newer version ^1.4.2
  • dependencies grouping
  • minimal python version set to ^3.7 (also required by newer poetry version)

ci/images/manager/Dockerfile

 # SPDX-License-Identifier: GPL-3.0-or-later
 
-FROM fedora:35
-MAINTAINER Knot Resolver <knot-resolver@labs.nic.cz>
+FROM fedora:38
+LABEL Knot Resolver <knot-resolver@labs.nic.cz>
 
 WORKDIR /root
 CMD ["/bin/bash"]
 ENV PATH="/root/.local/bin:${PATH}"
 
-# Install Python
-RUN dnf install -y git diffutils python3.6 python3.7 python3.8 python3.9 python3.10 python3-gobject pkg-config cairo-devel gcc python3-devel gobject-introspection-devel cairo-gobject-devel which \
+# Install Python and deps
+RUN dnf install -y python3.7 python3.8 python3.9 python3.10 python3.10-devel python3 python3-devel python3-gobject\
+	git which diffutils gcc pkg-config cairo-devel gobject-introspection-devel cairo-gobject-devel\
 	&& dnf clean all
 
-# Install Poetry
-RUN python3 -m pip install -U pip \
-	&& curl -sSL https://install.python-poetry.org | python3 - --version 1.1.12\
+# Install pip
+RUN python3 -m pip install -U pip\
+	# Install poetry
+	&& curl -sSL https://install.python-poetry.org | python3 - --version 1.4.2\
 	# not exactly required, but helpful
 	&& python3 -m pip install poethepoet