Going from 0.0.0.dev4 to -> 0.0.0.dev7 zodbtools:

- Stabilized `zodb dump` format and layed ground for `zodb restore`;
- Taught `zodb analyze` to work with any ZODB storage (instead of being
  FileStorage-only tool) and to analyze a particular range of history
  (instead of crunching data for days on a large database);
- Added `zodb commit` tool that is handy in testing.

Since zodbtools started to depend on pygolang, remove the conflicting,
and now unneeded, explicit pygolang pin from neotest.