Update from master

Squashed commit of the following:

commit fb79786bd154505ea9c7578e6247dea565ea9c41
Author: Mark Beierl <mark.beierl@canonical.com>
Date:   Thu May 18 22:21:06 2023 -0400

    Wrapping Retry for Py3.10

    The retrying_async library is not Python 3.10 ready, so we are providing
    a 3.10 compatible callback for it to use instead of the default one

    Change-Id: I15e9b64c70d4d294c9ff0c6c7048cd257f6e1b61
    Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

commit 714d8874783b507cd66a37d1dcd2f1d3ac980257
Author: Mark Beierl <mark.beierl@canonical.com>
Date:   Thu May 18 15:08:06 2023 -0400

    Wrapping Retry for Py3.10

    The retrying_async library is not Python 3.10 ready, so we are providing
    a 3.10 compatible callback for it to use instead of the default one

    Change-Id: I6e98f6d7ebc2fe134b0e3fe37d180e383044b30b
    Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

commit 2c3c146360fe5ce949a81e0e55e0e62e7f805d0b
Author: Mark Beierl <mark.beierl@canonical.com>
Date:   Mon May 15 16:17:02 2023 -0400

    Python3.10/Ubuntu 22.04 part 2

    Removal of loop from all methods

    Change-Id: I05bfe90f82b8c8acba3172de89c7d8e0ee08402b
    Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

commit fcbd881700fec0522c81e8b32e3a982fb3ccbd80
Author: Gabriel Cuba <gcuba@whitestack.com>
Date:   Thu May 11 02:04:17 2023 -0500

    Remove charset-normalizer version constraint

    Change-Id: I46311f74e949270278f685c50576f5884ba96227
    Signed-off-by: Gabriel Cuba <gcuba@whitestack.com>
    Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

commit 474fd958ac88b5d2275d3acbc2fabe22e5e9344f
Author: Guillermo Calvino <guillermo.calvino@canonical.com>
Date:   Fri Apr 28 11:51:43 2023 +0200

    Ubuntu 22.04 and Python 3.10 preparation

    Change-Id: I57a4ee39c101bdab610a6964de58eaa2653d37a3
    Signed-off-by: Guillermo Calvino <guillermo.calvino@canonical.com>
    Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

commit 806cd5cf9456e69a849f4231e163da4f72379c1b
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Fri Mar 24 14:03:17 2023 +0100

    Fix black errors

    Change-Id: I58c380853485995e2c37163a958b06072cbe24ca
    Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
    (cherry picked from commit 9831d7e8205bce462a669a8cc2b3dc1a611c924c)

Change-Id: I0c9356df8f245b68f72f4d64ba90c9811f2e5ec7
Signed-off-by: Dario Faccin <dario.faccin@canonical.com>
diff --git a/Dockerfile b/Dockerfile
index c597522..27ab273 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@
 #   devops-stages/stage-build.sh
 #
 
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ARG APT_PROXY
 RUN if [ ! -z $APT_PROXY ] ; then \
@@ -37,7 +37,9 @@
         python3 \
         python3-all \
         python3-dev \
-        python3-setuptools
+        python3-setuptools \
+        python3-pip \
+        tox
 
-RUN python3 -m easy_install pip==21.3.1
-RUN pip install tox==3.24.5
+ENV LC_ALL C.UTF-8
+ENV LANG C.UTF-8