chore: use testify instead of t.Fatal

[mmorel-35]

Description of the changes

• Replaces t.Fatal calls with "github.com/stretchr/testify/require" use

How was this change tested?

• CI

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.49%. Comparing base (c65757f) to head (78c54fd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6162      +/-   ##
==========================================
+ Coverage   96.47%   96.49%   +0.01%     
==========================================
  Files         354      354              
  Lines       20126    20126              
==========================================
+ Hits        19417    19420       +3     
+ Misses        524      522       -2     
+ Partials      185      184       -1     

Flag	Coverage Δ
badger_v1	8.31% <ø> (ø)
badger_v2	1.67% <ø> (ø)
cassandra-4.x-v1	14.39% <ø> (ø)
cassandra-4.x-v2	1.61% <ø> (ø)
cassandra-5.x-v1	14.39% <ø> (ø)
cassandra-5.x-v2	1.61% <ø> (ø)
elasticsearch-6.x-v1	18.60% <ø> (+<0.01%)	⬆️
elasticsearch-7.x-v1	18.68% <ø> (ø)
elasticsearch-8.x-v1	18.84% <ø> (-0.01%)	⬇️
elasticsearch-8.x-v2	1.66% <ø> (-0.02%)	⬇️
grpc_v1	9.47% <ø> (ø)
grpc_v2	7.00% <ø> (ø)
kafka-v1	8.88% <ø> (ø)
kafka-v2	1.67% <ø> (ø)
memory_v2	1.67% <ø> (+0.01%)	⬆️
opensearch-1.x-v1	18.73% <ø> (+<0.01%)	⬆️
opensearch-2.x-v1	18.72% <ø> (-0.01%)	⬇️
opensearch-2.x-v2	1.67% <ø> (+0.01%)	⬆️
tailsampling-processor	0.46% <ø> (ø)
unittests	95.40% <ø> (+0.01%)	⬆️

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[yurishkuro]

Thanks 🙏