fix(operator): revert broken OTel version

[odubajDT]

Reverted part of https://github.com/keptn/lifecycle-toolkit/pull/281/files#diff-f7893cd19dbd21bb6025ab8336c0fa1799f30e7cfcd17fd0cbcb73c7c0d1e3b9

Fixes: #415

[codecov]

Codecov Report

Merging #447 (7e83345) into main (19114db) will increase coverage by 3.59%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #447      +/-   ##
==========================================
+ Coverage   34.39%   37.99%   +3.59%     
==========================================
  Files          23       28       +5     
  Lines        1820     2082     +262     
==========================================
+ Hits          626      791     +165     
- Misses       1145     1227      +82     
- Partials       49       64      +15     

Impacted Files	Coverage Δ
operator/controllers/common/spanhandler.go	78.57% <0.00%> (ø)
operator/controllers/common/test_utils.go	0.00% <0.00%> (ø)
...ers/keptnappversion/reconcile_prepostdeployment.go	81.25% <0.00%> (ø)
operator/controllers/keptnappversion/controller.go	71.87% <0.00%> (ø)
...ollers/keptnappversion/reconcile_workloadsstate.go	47.72% <0.00%> (ø)
...ers/keptnappversion/reconcile_prepostevaluation.go	81.25% <0.00%> (ø)

Flag	Coverage Δ
keptn-lifecycle-operator	41.96% <ø> (+3.44%)	⬆️
scheduler	4.52% <ø> (ø)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
3 Code Smells

No Coverage information
2.9% Duplication

[thschue]

lgtm