v0.13.1

• Added secret detection logic to Azure service principal crawler (#950).
• Create storage credentials based on instance profiles and existing roles (#869).
• Enforced protected-access pylint rule (#956).
• Enforced pylint on unit and integration test code (#953).
• Enforcing invalid-name pylint rule (#957).
• Fixed AzureResourcePermissions.load to call Installation.load (#962).
• Fixed installer script to reuse an existing UCX Cluster policy if present (#964).
• More pylint tuning (#958).
• Refactor workspace_client_mock to have combine fixtures stored in separate JSON files (#955).

Dependency updates:

• Updated databricks-sdk requirement from ~=0.19.0 to ~=0.20.0 (#961).

Contributors: @nfx, @dependabot[bot], @qziyuan, @HariGS-DB, @FastLee, @nkvuong