Retry conda update command
This MR trivially modifies the CI config to retry the conda update command in the init-conda anchor block to prevent annoying HTTP errors such as https://git.ligo.org/computing/conda/-/jobs/1144757.
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This MR trivially modifies the CI config to retry the conda update command in the init-conda anchor block to prevent annoying HTTP errors such as https://git.ligo.org/computing/conda/-/jobs/1144757.