Update development dependency - Twine to v3.2.0

[PeterDaveHello]

Twine version < 2.0 was reported has a security vulnerability

From Twine version 2.0+, it requires Python 3.6, but doesn't seem to
have other breaking changes.

Reference:

• Security vulnerability in requests pypa/twine#491
• https://twine.readthedocs.io/en/latest/changelog.html

$ safety check --full-report
+==============================================================================+
|                                                                              |
|                               /$$$$$$            /$$                         |
|                              /$$__  $$          | $$                         |
|           /$$$$$$$  /$$$$$$ | $$  \__//$$$$$$  /$$$$$$   /$$   /$$           |
|          /$$_____/ |____  $$| $$$$   /$$__  $$|_  $$_/  | $$  | $$           |
|         |  $$$$$$   /$$$$$$$| $$_/  | $$$$$$$$  | $$    | $$  | $$           |
|          \____  $$ /$$__  $$| $$    | $$_____/  | $$ /$$| $$  | $$           |
|          /$$$$$$$/|  $$$$$$$| $$    |  $$$$$$$  |  $$$$/|  $$$$$$$           |
|         |_______/  \_______/|__/     \_______/   \___/   \____  $$           |
|                                                          /$$  | $$           |
|                                                         |  $$$$$$/           |
|  by pyup.io                                              \______/            |
|                                                                              |
+==============================================================================+
| REPORT                                                                       |
| checked 88 packages, using default DB                                        |
+============================+===========+==========================+==========+
| package                    | installed | affected                 | ID       |
+============================+===========+==========================+==========+
| twine                      | 1.15.0    | <2.0.0                   | 37504    |
+==============================================================================+
| Twine 2.0.0 bumps requests to 2.20 (or later) to avoid reported security     |
| vulnerabilities in earlier releases (bug 491).                               |
+==============================================================================+

[ross]

I did have things configured to use Dependabot Preview and it would keep on top of this stuff and open monthly PRs to get them updated, https://github.com/octodns/octodns/blob/20d34e08335205fa6e2dd8ac3072c4eca16ea34a/.dependabot/config.yml.

Haven't seen those in a while so guess they must have finished the move over to a native GitHub thing. I haven't looked into that yet https://docs.github.com/en/free-pro-team@latest/github/administering-a-repository/keeping-your-dependencies-updated-automatically. Looks like it may be settings in the repo rather than a (configured) addon now.

[ross]

| Twine 2.0.0 bumps requests to 2.20 (or later) to avoid reported security |
| vulnerabilities in earlier releases (bug 491). |

Looking at ^ I don't think the twine security vuln would impact octoDNS as it already pulls requests 2.24.0 https://github.com/octodns/octodns/blob/master/requirements.txt#L23

Don't think it'll hurt to update twine though.