* rewrite/refactor deposit testing code
keep track of sent deposits so that they can be compared in detail with
the validator set retreived from the API.
* fix bugs in evaluator and retry
* lint + deepsource appeasement
* typo s/Sprintf/Printf/
* gosec, more like nosec
* fix gosec number - 204->304
* type switch to get signed block from container
* improve comments
* centralizing constants and adding comments
* lock around Depositor to avoid future races
Co-authored-by: Kasey Kirkham <kasey@users.noreply.github.com>
