[backport -> release/0.2.x] fix: change request_body and response_body columns to text (#38)

[webhookx-x]

Summary

cherry-pick from #38 to release/0.2.x

[codecov]

Codecov Report

Attention: Patch coverage is 91.30435% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
db/dao/attempt_detail_dao.go	75.00%	1 Missing and 1 partial ⚠️

Flag	Coverage Δ
integration	64.42% <91.30%> (+0.03%)	⬆️
unit	12.58% <0.00%> (-0.02%)	⬇️

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Files with missing lines	Coverage Δ
admin/api/attempts.go	100.00% <100.00%> (ø)
db/entities/attempt.go	100.00% <ø> (+11.76%)	⬆️
db/entities/types.go	50.00% <100.00%> (+50.00%)	⬆️
worker/worker.go	66.83% <100.00%> (ø)
db/dao/attempt_detail_dao.go	88.88% <75.00%> (-11.12%)	⬇️