Builds failing due to old openssl version

[Simplemente3d]

Describe the bug
On May 2023 urllib3 stopped supporting OpenSSL versions older than 1.1.1.
The current test image is using
openssl version
OpenSSL 1.0.2g 1 Mar 2016

This causes build issues when initiating tests:

E
======================================================================
ERROR: continuousprint (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: continuousprint
Traceback (most recent call last):
  File "/opt/python/3.7.13/lib/python3.7/unittest/loader.py", line 470, in _find_test_path
    package = self._get_module_from_name(name)
  File "/opt/python/3.7.13/lib/python3.7/unittest/loader.py", line 377, in _get_module_from_name
    __import__(name)
  File "/home/travis/build/smartin015/continuousprint/continuousprint/__init__.py", line 4, in <module>
    import octoprint.plugin
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/octoprint/plugin/__init__.py", line 22, in <module>
    from octoprint.plugin.core import Plugin, PluginInfo, PluginManager  # noqa: F401
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/octoprint/plugin/core.py", line 36, in <module>
    from octoprint.util import sv, time_this, to_unicode
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/octoprint/util/__init__.py", line 36, in <module>
    from octoprint.util.connectivity import ConnectivityChecker  # noqa: F401
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/octoprint/util/connectivity.py", line 9, in <module>
    from octoprint.util.net import resolve_host, server_reachable
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/octoprint/util/net.py", line 11, in <module>
    import requests
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/requests/__init__.py", line 43, in <module>
    import urllib3
  File "/home/travis/virtualenv/python3.7.13/lib/python3.7/site-packages/urllib3/__init__.py", line 42, in <module>
    "urllib3 v2.0 only supports OpenSSL 1.1.1+, currently "
ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'OpenSSL 1.0.2g  1 Mar 2016'. See: https://github.com/urllib3/urllib3/issues/2168
----------------------------------------------------------------------
Ran 1 test in 0.000s
FAILED (errors=1)
The command "coverage run -m unittest discover -p "*_test.py"" exited with 1.
Done. Your build exited with 1.

Python or OpenSSL versions need to be bumped to fix the problem.

Browser logs:
Build log
https://app.travis-ci.com/github/smartin015/continuousprint/jobs/615061017

Additional context
Add any other context about the problem here.