Change regex validation for names

[fsxfreak]

Problem

We allow index names to be alphanumeric with dashes in between, and require the first and last character be alphanumeric. The existing regex doesn't allow for that, so here's the proposed regex

Solution

Cross checked with internal specs

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Infrastructure change (CI configs, etc)
• Non-code change (docs, etc)
• None of the above: (explain here)

Test Plan

Played around with the regex in https://regex101.com/

[jhamon]

Hey, thanks for helping out again here. The files you're attempting to edit (and everything under pinecone/core/) are generated from our privately held openapi spec. So the way to update these values is to make a change to the spec and then regenerate this part of the client. If you ask in #apis slack channel people can walk you through these steps.

[fsxfreak]

Hey, thanks for helping out again here. The files you're attempting to edit (and everything under pinecone/core/) are generated from our privately held openapi spec. So the way to update these values is to make a change to the spec and then regenerate this part of the client. If you ask in #apis slack channel people can walk you through these steps.

thanks, let me open another PR after I figure out where the source of truth spec is