Remove branch protection for vwx releases

[Alex-Welsh]

This change adapts our old branch protection rules - matching stackhpc/[vwxy]* to instead only match stackhpc/yoga for two reasons:

1. Older releases (V/W/X) are no longer supported
2. branch protection rules with wildcard matching regularly breaks our automation. For example, stackhpc/yoga-community files matches the existing rules, and is a common branch name for our automation, which can then no longer be deleted. This is a common occurance when re-creating an existing automated PR.

[gemini-code-assist]

Code Review

This pull request updates the GitHub branch protection configuration by replacing the wildcard pattern stackhpc/[vwxy]* with the specific branch stackhpc/yoga across branches.tf, import_resources.py, and terraform.tfvars.json. The reviewer correctly pointed out that the comments explaining the wildcard matching logic in branches.tf are now obsolete and should be removed to keep the codebase clean.

Important

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For more details on the timeline and next steps, please review the Help Documentation.

[stackhpc-ci]

Terraform Format and Style 🖌success

Terraform Initialization ⚙️success

Terraform Validation 🤖success

Validation Output

Success! The configuration is valid.

Terraform Plan 📖success

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Pusher: @Alex-Welsh, Action: pull_request, Working Directory: ``, Workflow: Terraform GitHub