4b8600f4

By: Michael Lynch <git@mtlynch.io>

Rename image upload handler

Match the slice-2.5 handler name by renaming uploadPost to uploadImagePost.
configuredevShellbackendbackend-devcheck-bashcheck-frontendcheck-go-formattingcheck-go-test-packagescheck-trailing-newlinecheck-trailing-whitespacedeploy-to-flydiagramdocker-imagee2e-testsgo-testsimport-from-tinybeanslint-sqllittle-momentslittle-moments-devx86_64-linux