Update to 23.5, turn into proper portable installation

[mbargull]

Checklist

• [x] Used a fork of the feedstock to propose changes
• [ ] Bumped the build number (if the version is unchanged)
• [x] Reset the build number to 0 (if the version changed)
• [x] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [ ] Ensured the license file is being packaged.

fixes gh-19 fixes gh-22 fixes gh-25

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• License is not an SPDX identifier (or a custom LicenseRef) nor an SPDX license expression.

Documentation on acceptable licenses can be found here.

[xhochy]

@conda-forge-admin please rerender

[github-actions[bot]]

Hi! This is the friendly automated conda-forge-webservice.

I tried to rerender for you, but it looks like I wasn't able to push to the 22.8.28 branch of mbargull-feedstocks/miktex-feedstock. Did you check the "Allow edits from maintainers" box?

NOTE: PRs from organization accounts or PRs from forks made from organization forks cannot be rerendered because of GitHub permissions. Please fork the feedstock directly from conda-forge into your personal GitHub account.

This message was generated by GitHub actions workflow run https://github.com/conda-forge/miktex-feedstock/actions/runs/4434411718.

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I was trying to look for recipes to lint for you, but it appears we have a merge conflict. Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• License is not an SPDX identifier (or a custom LicenseRef) nor an SPDX license expression.

Documentation on acceptable licenses can be found here.

[h-vetinari]

Thanks for tackling this! ❤️

[mbargull]

Thanks for tackling this! heart

Now let's also hope that the research at Anaconda for getting an updated MinGW-w64 + UCRT toolchain bears fruit ;).