Update OTEL collector library to v0.108.1 (1.8 backport)

[mariomac]

Backport of #1133

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.25%. Comparing base (9a20dda) to head (792ef51).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1134      +/-   ##
==========================================
+ Coverage   82.03%   82.25%   +0.22%     
==========================================
  Files         140      141       +1     
  Lines       11574    11730     +156     
==========================================
+ Hits         9495     9649     +154     
+ Misses       1557     1556       -1     
- Partials      522      525       +3     

Flag	Coverage Δ
integration-test	57.56% <100.00%> (+0.24%)	⬆️
k8s-integration-test	59.54% <100.00%> (+0.26%)	⬆️
oats-test	37.07% <100.00%> (+0.18%)	⬆️
unittests	52.93% <100.00%> (+0.57%)	⬆️

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