perf: Optimize base_url configuration by removing trailing slash

[chyroc]

• Removed trailing slash from base_url configuration to prevent user configuration errors

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.05%. Comparing base (354868d) to head (e5b9d1d). Report is 1 commits behind head on main.

@@            Coverage Diff             @@
##             main     #109      +/-   ##
==========================================
+ Coverage   98.03%   98.05%   +0.01%     
==========================================
  Files          46       46              
  Lines        3265     3293      +28     
==========================================
+ Hits         3201     3229      +28     
  Misses         64       64              

Files with missing lines	Coverage Δ
cozepy/audio/__init__.py	100.00% <100.00%> (ø)
cozepy/audio/rooms/__init__.py	100.00% <100.00%> (ø)
cozepy/audio/speech/__init__.py	100.00% <100.00%> (ø)
cozepy/audio/voices/__init__.py	100.00% <100.00%> (ø)
cozepy/auth/__init__.py	93.10% <100.00%> (ø)
cozepy/bots/__init__.py	100.00% <100.00%> (ø)
cozepy/chat/__init__.py	96.10% <100.00%> (+0.01%)	:arrow_up:
cozepy/chat/message/__init__.py	100.00% <100.00%> (ø)
cozepy/conversations/__init__.py	100.00% <100.00%> (ø)
cozepy/conversations/message/__init__.py	100.00% <100.00%> (ø)
... and 10 more