CompatHelper: add new compat entry for Statistics at version 1, (keep existing compat)

[github-actions[bot]]

This pull request sets the compat entry for the Statistics package to 1. This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request. Note: Consider registering a new release of your package immediately after merging this PR, as downstream packages may depend on this for tests to pass.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (dd67fb5) 84.83% compared to head (7d9939d) 84.83%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #978 +/- ## ======================================= Coverage 84.83% 84.83% ======================================= Files 40 40 Lines 4055 4055 ======================================= Hits 3440 3440 Misses 615 615 ``` | [Flag](https://app.codecov.io/gh/mimiframework/Mimi.jl/pull/978/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mimiframework) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/mimiframework/Mimi.jl/pull/978/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mimiframework) | `84.83% <ø> (ø)` | | 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=mimiframework#carryforward-flags-in-the-pull-request-comment) to find out more.

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