Update pin for libsvm

[regro-cf-autotick-bot]

This PR has been triggered in an effort to update the pin for libsvm. The current pinned version is 3.21, the latest available version is 324 and the max pin pattern is x.x. This migration will impact 1 feedstocks.

Notes and instructions for merging this PR:

1. Please merge the PR only if this new version is to be a supported pin.
2. Feel free to push to the bot's branch to update this PR if needed.
3. Please make sure to properly bump the version and build number of the pinnings package.

**Please note that if you close this PR we presume that the new pin has been rejected.

@conda-forge-admin please ping libsvm

If this PR was opened in error or needs to be updated please add the bot-rerun label to this PR. The bot will close this PR and schedule another one. If you do not have permissions to add this label, you can use the phrase @conda-forge-admin, please rerun bot in a PR comment to have the conda-forge-admin add it for you.

_{This PR was created by the regro-cf-autotick-bot.
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[conda-forge-linter]

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

I was asked to ping @conda-forge/libsvm and so here I am doing that.

[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.

[bkpoon]

From the discussion in an earlier pull request for libsvm-feedstock, the ABI is stable, so updating the pin should not be necessary.

conda-forge/libsvm-feedstock#7

[beckermr]

We need repodata patches and possibly updates to run exports on the feedstock.

[bkpoon]

So something like

build:
  run_exports:
    - {{ pin_subpackage('libsvm', max_pin='x.x') }}

needs to be added to the meta.yaml in libsvm-feedstock?

I can add that.

I'm not sure about repodata patches. There is currently one patch in the recipe for updating the Makefile for Windows.

[bkpoon]

From the chatter on gitter.im, it looks like I misunderstood what repodata patches mean. Is it making a pull request to https://github.com/conda-forge/conda-forge-repodata-patches-feedstock?

I recently added myself as a maintainer for libsvm to help clear out some migrations, so I'm happy to fix anything with this feedstock.

[beckermr]

From the chatter on gitter.im, it looks like I misunderstood what repodata patches mean. Is it making a pull request to https://github.com/conda-forge/conda-forge-repodata-patches-feedstock?

yes!

[hmaarrfk]

Lets just do the migration. it isn't that many feedstocks, and it helps update the compilers and refresh those recipes too.

I've merged '325'
#3368