Less repo timestamp updates

[trent-codecov]

Only update the timestamp IF other fields change. This will help immensely with DB lock contention.

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Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. In 2022 this entity acquired Codecov and as result Sentry is going to need some rights from me in order to utilize my contributions in this PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

[codecov-notifications]

Codecov Report

Attention: Patch coverage is 60.00000% with 6 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
tasks/sync_repos.py	60.00%	6 Missing ⚠️

@@            Coverage Diff             @@
##             main     #842      +/-   ##
==========================================
- Coverage   98.04%   98.03%   -0.02%     
==========================================
  Files         444      444              
  Lines       36064    36083      +19     
==========================================
+ Hits        35360    35373      +13     
- Misses        704      710       +6     

Flag	Coverage Δ
integration	98.03% <60.00%> (-0.02%)	⬇️
unit	98.03% <60.00%> (-0.02%)	⬇️

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

Components	Coverage Δ
NonTestCode	95.98% <60.00%> (-0.04%)	⬇️
OutsideTasks	98.06% <ø> (+<0.01%)	⬆️

Files with missing lines	Coverage Δ
tasks/sync_repos.py	94.81% <60.00%> (-2.72%)	⬇️

... and 1 file with indirect coverage changes

[codecov-qa]

Codecov Report

Attention: Patch coverage is 60.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 98.03%. Comparing base (4ab80f2) to head (aa812ed).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
tasks/sync_repos.py	60.00%	6 Missing ⚠️

@@            Coverage Diff             @@
##             main     #842      +/-   ##
==========================================
- Coverage   98.04%   98.03%   -0.02%     
==========================================
  Files         444      444              
  Lines       36064    36083      +19     
==========================================
+ Hits        35360    35373      +13     
- Misses        704      710       +6     

Flag	Coverage Δ
integration	98.03% <60.00%> (-0.02%)	⬇️
unit	98.03% <60.00%> (-0.02%)	⬇️

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

Components	Coverage Δ
NonTestCode	95.98% <60.00%> (-0.04%)	⬇️
OutsideTasks	98.06% <ø> (+<0.01%)	⬆️

Files with missing lines	Coverage Δ
tasks/sync_repos.py	94.81% <60.00%> (-2.72%)	⬇️

... and 1 file with indirect coverage changes

[codecov-public-qa]

Codecov Report

Attention: Patch coverage is 60.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 98.03%. Comparing base (4ab80f2) to head (aa812ed).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

@@            Coverage Diff             @@
##             main     #842      +/-   ##
==========================================
- Coverage   98.04%   98.03%   -0.02%     
==========================================
  Files         444      444              
  Lines       36064    36083      +19     
==========================================
+ Hits        35360    35373      +13     
- Misses        704      710       +6     

Flag	Coverage Δ
integration	98.03% <60.00%> (-0.02%)	⬇️
unit	98.03% <60.00%> (-0.02%)	⬇️

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

Components	Coverage Δ
NonTestCode	95.98% <60.00%> (-0.04%)	⬇️
OutsideTasks	98.06% <ø> (+<0.01%)	⬆️

Files	Coverage Δ
tasks/sync_repos.py	94.81% <60.00%> (-2.72%)	⬇️

... and 1 file with indirect coverage changes