fix: cache rollup task serialization

[joseph-sentry]

there's an error where the cursor of the serialized table BytesIO is not at the start which causes it to fail writing to GCP, this fixes that

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.93%. Comparing base (6844106) to head (00318ab).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #872   +/-   ##
=======================================
  Coverage   97.93%   97.93%           
=======================================
  Files         444      444           
  Lines       35463    35464    +1     
=======================================
+ Hits        34731    34732    +1     
  Misses        732      732           

Flag	Coverage Δ
integration	41.99% <0.00%> (-0.01%)	⬇️
unit	90.68% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
NonTestCode	95.95% <100.00%> (+<0.01%)	⬆️
OutsideTasks	95.63% <ø> (ø)

Files with missing lines	Coverage Δ
tasks/cache_test_rollups.py	94.87% <100.00%> (+0.13%)	⬆️

[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

@@           Coverage Diff           @@
##             main     #872   +/-   ##
=======================================
  Coverage   97.93%   97.93%           
=======================================
  Files         444      444           
  Lines       35463    35464    +1     
=======================================
+ Hits        34731    34732    +1     
  Misses        732      732           

Flag	Coverage Δ
integration	41.99% <0.00%> (-0.01%)	⬇️
unit	90.68% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
NonTestCode	95.95% <100.00%> (+<0.01%)	⬆️
OutsideTasks	95.63% <ø> (ø)

Files with missing lines	Coverage Δ
tasks/cache_test_rollups.py	94.87% <100.00%> (+0.13%)	⬆️

[codecov-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.93%. Comparing base (6844106) to head (00318ab).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

@@           Coverage Diff           @@
##             main     #872   +/-   ##
=======================================
  Coverage   97.93%   97.93%           
=======================================
  Files         444      444           
  Lines       35463    35464    +1     
=======================================
+ Hits        34731    34732    +1     
  Misses        732      732           

Flag	Coverage Δ
integration	41.99% <0.00%> (-0.01%)	⬇️
unit	90.68% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
NonTestCode	95.95% <100.00%> (+<0.01%)	⬆️
OutsideTasks	95.63% <ø> (ø)

Files with missing lines	Coverage Δ
tasks/cache_test_rollups.py	94.87% <100.00%> (+0.13%)	⬆️

[codecov-public-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.93%. Comparing base (6844106) to head (00318ab).

✅ All tests successful. No failed tests found.

@@           Coverage Diff           @@
##             main     #872   +/-   ##
=======================================
  Coverage   97.93%   97.93%           
=======================================
  Files         444      444           
  Lines       35463    35464    +1     
=======================================
+ Hits        34731    34732    +1     
  Misses        732      732           

Flag	Coverage Δ
integration	41.99% <0.00%> (-0.01%)	⬇️
unit	90.68% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
NonTestCode	95.95% <100.00%> (+<0.01%)	⬆️
OutsideTasks	95.63% <ø> (ø)

Files	Coverage Δ
tasks/cache_test_rollups.py	94.87% <100.00%> (+0.13%)	⬆️

[github-actions]

✅ All tests successful. No failed tests were found.

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