Wrap remaining secretScanning endpoints (2 missing of 8)

[ldraney]

Parent Issue

#86 — Expand Octokit coverage

Category: secretScanning

File: src/tools/categories/secretScanning.ts
Current: 6/8

Already Wrapped

listAlertsForRepo, listAlertsForOrg, listAlertsForEnterprise, getAlert, updateAlert, listLocationsForAlert

Methods to Add (2)

Method	Route
createPushProtectionBypass	POST /repos/{owner}/{repo}/secret-scanning/push-protection-bypasses
getScanHistory	GET /repos/{owner}/{repo}/secret-scanning/scan/history

Pattern

See src/tools/categories/git.ts. Tool name: github_secret_scanning_<snake_case_method>.

Acceptance Criteria

• Both methods wrapped
• npm run build passes
• TOOLS.md updated