WIP Install dvc from the yum repository in vercel

[seisman]

Description of proposed changes

Fixes #

Reminders

• Make sure that your code follows our style. Use the other functions/files as a basis.
• Add tests for new features or tests that would have caught the bug that you're fixing.
• Describe changes to function behavior and arguments in a comment below the function declaration.
• If adding new functionality, add a detailed description to the documentation and/or an example.

[maxrjones]

FYI that #6356 will provide an option to generate the images rather than pulling from DAGsHub such that dvc could be avoided.

[seisman]

FYI that #6356 will provide an option to generate the images rather than pulling from DAGsHub such that dvc could be avoided.

I just noticed that our free Vercel plan will be discontinued (https://vercel.com/gmt):

https://vercel.com/support/articles/legacy-plans-deprecation

[maxrjones]

FYI that #6356 will provide an option to generate the images rather than pulling from DAGsHub such that dvc could be avoided.

I added an option to generate the images in #6473, but the number of issues reported with remote files in https://vercel.com/gmt/gmt/3LtDJS1pt31f6AT7LkpWxFZeMCtu indicates that this will not be a feasible solution to the docs preview failures.