retry failed request

[scottgigante-immunai]

Requests is a little flaky. This should fix it.

[mxposed]

Looks good! Do you want to change another requests call in load_raw_counts too?

[codecov[bot]]

Codecov Report

Base: 94.96% // Head: 94.96% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (7c83c3f) compared to base (2a1c8fb). Patch coverage: 100.00% of modified lines in pull request are covered.

:exclamation: Current head 7c83c3f differs from pull request most recent head 48e83df. Consider uploading reports for the commit 48e83df to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #668 +/- ## ======================================= Coverage 94.96% 94.96% ======================================= Files 153 153 Lines 3891 3894 +3 Branches 201 201 ======================================= + Hits 3695 3698 +3 Misses 128 128 Partials 68 68 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `94.96% <100.00%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openproblems-bio#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://codecov.io/gh/openproblems-bio/openproblems/pull/668?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openproblems-bio) | Coverage Δ | | |---|---|---| | [openproblems/data/tabula\_muris\_senis.py](https://codecov.io/gh/openproblems-bio/openproblems/pull/668/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openproblems-bio#diff-b3BlbnByb2JsZW1zL2RhdGEvdGFidWxhX211cmlzX3NlbmlzLnB5) | `83.11% <100.00%> (+0.68%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openproblems-bio). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openproblems-bio)

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