ci: increase timeout-minutes to 45

[skl]

Some runners are slower than others, increase CI timeout from 30 minutes to 45.

[mmat11]

thanks!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.89%. Comparing base (5a78855) to head (3c4985f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1455   +/-   ##
=======================================
  Coverage   43.89%   43.89%           
=======================================
  Files         313      313           
  Lines       34213    34213           
=======================================
  Hits        15018    15018           
- Misses      18215    18217    +2     
+ Partials      980      978    -2     

Flag	Coverage Δ
integration-test	21.55% <ø> (-0.18%)	⬇️
integration-test-arm	0.00% <ø> (ø)
integration-test-vm-x86_64-5.15.152	0.00% <ø> (ø)
integration-test-vm-x86_64-6.10.6	0.00% <ø> (ø)
k8s-integration-test	2.28% <ø> (-0.01%)	⬇️
oats-test	0.00% <ø> (ø)
unittests	44.89% <ø> (-0.01%)	⬇️

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