chore: fix remove warehouse jobs panic

[cisse21]

Description

Fixes PIPE-421 : Removes panics from warehouse jobs module

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Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (dd457e4) 71.14% compared to head (1c3d045) 71.11%.
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3982      +/-   ##
==========================================
- Coverage   71.14%   71.11%   -0.03%     
==========================================
  Files         368      368              
  Lines       54049    54083      +34     
==========================================
+ Hits        38454    38463       +9     
- Misses      13307    13327      +20     
- Partials     2288     2293       +5     

Files	Coverage Δ
router/handle.go	71.36% <100.00%> (-0.07%)	⬇️
router/types/types.go	91.11% <ø> (ø)
warehouse/integrations/bigquery/bigquery.go	64.37% <100.00%> (-0.04%)	⬇️
warehouse/internal/mocks/utils/mock_uploader.go	86.17% <100.00%> (+0.11%)	⬆️
warehouse/utils/utils.go	82.00% <ø> (ø)
warehouse/jobs/jobs.go	7.69% <0.00%> (ø)
warehouse/validations/validate.go	81.26% <0.00%> (ø)
warehouse/integrations/redshift/redshift.go	73.85% <50.00%> (-0.19%)	⬇️
...nternal/service/loadfiles/downloader/downloader.go	79.77% <25.00%> (-2.79%)	⬇️
warehouse/router/upload.go	71.94% <28.57%> (-0.65%)	⬇️

... and 12 files with indirect coverage changes

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