python3-urllib3: Update to version 1.26.7 and python-3.10

python3-urllib3: Update to version 1.26.7 and python-3.10

- Update from 1.26.2 to 1.27.7
- Update of rootfile
- Changelog
1.26.7 (2021-09-22)
* Fixed a bug with HTTPS hostname verification involving IP addresses and lack
  of SNI. (Issue #2400)
* Fixed a bug where IPv6 braces weren't stripped during certificate hostname
  matching. (Issue #2240)
1.26.6 (2021-06-25)
* Deprecated the ``urllib3.contrib.ntlmpool`` module. urllib3 is not able to support
  it properly due to `reasons listed in this issue <https://github.com/urllib3/urllib3/issues/2282>`_.
  If you are a user of this module please leave a comment.
* Changed ``HTTPConnection.request_chunked()`` to not erroneously emit multiple
  ``Transfer-Encoding`` headers in the case that one is already specified.
* Fixed typo in deprecation message to recommend ``Retry.DEFAULT_ALLOWED_METHODS``.
1.26.5 (2021-05-26)
* Fixed deprecation warnings emitted in Python 3.10.
* Updated vendored ``six`` library to 1.16.0.
* Improved performance of URL parser when splitting
  the authority component.
1.26.4 (2021-03-15)
* Changed behavior of the default ``SSLContext`` when connecting to HTTPS proxy
  during HTTPS requests. The default ``SSLContext`` now sets ``check_hostname=True``.
1.26.3 (2021-01-26)
* Fixed bytes and string comparison issue with headers (Pull #2141)
* Changed ``ProxySchemeUnknown`` error message to be
  more actionable if the user supplies a proxy URL without
  a scheme. (Pull #2107)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>