[Snyk] Security upgrade setuptools from 39.0.1 to 65.5.1

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `pip` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • aiosmtpd/docs/RTD-requirements.txt

⚠️ Warning

``` sphinx-rtd-theme 1.2.0 has requirement docutils<0.19, but you have docutils 0.19. sphinx-jinja2-compat 0.2.0 requires markupsafe, which is not installed. Jinja2 3.1.2 requires MarkupSafe, which is not installed. ```

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	509/1000 Why? Has a fix available, CVSS 5.9	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-SETUPTOOLS-3180412	setuptools: 39.0.1 -> 65.5.1	No	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the affected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

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🦉 Regular Expression Denial of Service (ReDoS)

[codecov[bot]]

Codecov Report

Merging #368 (d18a34e) into master (83168cd) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #368   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            7         7           
  Lines         1706      1706           
  Branches       310       310           
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  Hits          1706      1706           

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[waynew]

This PR is just noisy - there's no reason for it to exist: the user would have to have an older version of setuptools, and somehow gain access to our RTD environment I think (given the file name) and THEN download something from a malicious package index.

...

I'm pretty sure that if that kind of thing happens that we have had way bigger problems. If anyone has a counterpoint or some information that I've missed, we can re-open this. Otherwise... :shrug: