Release v0.3.1

[mgyucht]

• Added timeout to w.clusters.ensure_cluster_running() (#227).
• Fixed debug_headers type hints for WorkspaceClient and AccountClient (#258).
• Made dbutils typecast use a valid type variable (#259).

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (c1c0886) 53.72% compared to head (02dffd9) 53.72%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #261   +/-   ##
=======================================
  Coverage   53.72%   53.72%           
=======================================
  Files          33       33           
  Lines       19349    19349           
=======================================
  Hits        10396    10396           
  Misses       8953     8953           

Files Changed	Coverage Δ
databricks/sdk/version.py	100.00% <100.00%> (ø)

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[kartikgupta-db]

Should we also write about the API changes in the changelog?

[nfx]

@kartikgupta-db it's not api change there