Improve workflows and fix some minor issues

[berndverst]

Description

Fixes #720

Also fixes some doc strings and improves workflows.

[codecov]

Codecov Report

Attention: Patch coverage is 94.11765% with 1 line in your changes missing coverage. Please review.

Project coverage is 86.63%. Comparing base (fc0e9d1) to head (bffb749).
Report is 30 commits behind head on main.

Files	Patch %	Lines
dapr/clients/grpc/_response.py	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #727      +/-   ##
==========================================
+ Coverage   86.37%   86.63%   +0.26%     
==========================================
  Files          79       84       +5     
  Lines        4094     4473     +379     
==========================================
+ Hits         3536     3875     +339     
- Misses        558      598      +40     

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