feat: UpdateCurrentUserPAT RPC proto definition

[AmanGIT07]

Summary by CodeRabbit

• New Features
  • Added a new API endpoint enabling users to update Personal Access Tokens with configurable attributes including token titles, role assignments, project access settings, and custom metadata.

[coderabbitai]

📝 Walkthrough

Walkthrough

A new UpdateCurrentUserPAT RPC endpoint is added to the FrontierService protobuf, enabling clients to update Personal Access Token details including title, associated role IDs, and project IDs.

Changes

Cohort / File(s)	Summary
PAT Update API raystack/frontier/v1beta1/frontier.proto	Added UpdateCurrentUserPAT RPC method with new UpdateCurrentUserPATRequest (id, title, role_ids, project_ids, metadata fields) and UpdateCurrentUserPATResponse (returns updated PAT object). Includes validation: UUID id, non-empty title, and required non-empty role_ids array.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• feat: ListCurrentUserPATs and GetCurrentUserPAT proto #447: Adds role_ids and project_ids fields to the PAT data model and List/Get RPCs that this update operation depends on.
• feat: DeleteCurrentUserPAT RPC proto definition #449: Adds complementary DeleteCurrentUserPAT RPC for PAT deletion within the same FrontierService.
• feat: add CreateCurrentUserPAT RPC #443: Introduces foundational PAT management RPC definitions to the FrontierService.

Suggested reviewers

• whoAbhishekSah
• rohilsurana

Poem

🐰 A PAT update hops into view,
Titles and roles get their refresh too,
With validation that's squeaky clean,
The finest API change we've seen! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title accurately describes the main change: adding the UpdateCurrentUserPAT RPC proto definition. It is concise, specific, and clearly communicates the primary purpose of the pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/update-current-user-pat

📝 Coding Plan

• Generate coding plan for human review comments

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