setup: Upgrade aiotools to 1.5 series

[achimnol]

• setup: Upgrade aiotools to 1.5 series
• fix: Update aiotools imports

[codecov]

Codecov Report

Merging #546 (3a2c62f) into main (d04d3c1) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #546   +/-   ##
=======================================
  Coverage   49.13%   49.13%           
=======================================
  Files          54       54           
  Lines        9031     9031           
=======================================
  Hits         4437     4437           
  Misses       4594     4594           

Impacted Files	Coverage Δ
src/ai/backend/manager/exceptions.py	54.28% <100.00%> (ø)

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