CloudFormation Helper Scripts version 2.0-16 not documented, latest version isn’t latest

### Name of the resource

Other

### Resource name

_No response_

### Reference Link

Release history page: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/releasehistory-aws-cfn-bootstrap.html

### Details

The current latest version of the scripts do not work with Python 3: #1304. In order to fix this, I’ve updated my install process to apply a post-install patch: https://github.com/aws-cloudformation/cloudformation-coverage-roadmap/issues/1304#issuecomment-1275860521

I'm trying to my process more robust, by pinning my install to the current latest version. This will prevent a new fixed release of cfn-bootstrap breaking my install process.

The [release history page](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/releasehistory-aws-cfn-bootstrap.html) lists 2.0-15 as the latest version. But installing that version is broken with new versions of setuptools, with an error `use_2to3 is invalid` in a dependency:

```
$ pip install https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-py3-2.0-15.tar.gz
Collecting https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-py3-2.0-15.tar.gz
Downloading https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-py3-2.0-15.tar.gz (591 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 591.5/591.5 kB 1.4 MB/s eta 0:00:00
Preparing metadata (setup.py) ... done
Collecting python-daemon<2.2,>=2.1
Using cached python_daemon-2.1.2-py2.py3-none-any.whl (19 kB)
Collecting pystache<=0.5.4
Downloading pystache-0.5.4.tar.gz (75 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 75.1/75.1 kB 1.8 MB/s eta 0:00:00
Preparing metadata (setup.py) ... error
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [3 lines of output]
pystache: using: version '65.5.0' of
Warning: 'classifiers' should be a list, got type 'tuple'
error in pystache setup command: use_2to3 is invalid.
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
```

I was baffled as to why “latest” worked but “2.0-15” didn't, since the docs imply that they’re the same. I tried “2.0-16” in the URL, at a guess, and that’s a real version too! But it’s broken with the same error too.

The `latest` version has a fix for the above issue: it pins `pystache>=0.4.0` in its `setup.py`, rather than setting a hard upper bound: `pystache<=0.5.4`. But it is also missing a bunch of changes from the `2.0-16` release!

The S3 bucket has [public listing]() on - from there I can see that the 2.0-16 release was made August 23rd:

```

aws-cfn-bootstrap-py3-2.0-16.tar.gz
2022-08-23T22:16:24.000Z
...

```

Whilst the “latest” release is from January:

```

aws-cfn-bootstrap-latest.tar.gz
2022-01-18T19:52:14.000Z
...

```

This is really frustrating. I’m layering workaround on workaround due to this tool not being compatible with a year-old Python version and a shoddy release process.

Start with the CloudFormation helper scripts release history page and compare its listed latest version with the published 2.0-16 and latest artifacts described in the issue. Update the documentation so the release history accurately identifies 2.0-16 and the current latest artifact, then verify the version links and installation details.

Written by the indexing model from the issue text.