Fix -contains to allow multiple terms with "OR" logic unless -and is added

[eigenric]

Solves #1877

Allow multiple occurrences of the -contains argument to be stored in a list. Previously, only the last occurrence was considered.
By default without "-and" it follows or logic, meaning that if multiple -contains arguments are provided, entries matching any of them will be included in the results.
With the -and flag entries containing all of them will be included in the results.

Default Or Behaviour

> jrnl foo
> jrnl bar
> jrnl foo bar

> jrnl -contains foo -contains bar
┏━━━━━━━━━━━━━━━━━━━┓
┃  3 entries found  ┃
┗━━━━━━━━━━━━━━━━━━━┛
09/05/24 22:29 foo
| foo

09/05/24 22:29 bar
| bar

09/05/24 22:29 foo bar
| foo bar

With -and

> ...
> jrnl last entry foo bar
> jrnl -contains foo -and -contains bar
┏━━━━━━━━━━━━━━━━━━━┓
┃  2 entries found  ┃
┗━━━━━━━━━━━━━━━━━━━┛
09/05/24 22:29 foo bar
| foo bar

10/05/24 00:01 last entry foo bar

Checklist

• I have read the contributing doc.
• I have included a link to the relevant issue number.
• I have checked to ensure there aren't other open pull requests
  for the same issue.
• I have written new tests for these changes, as needed.

[eigenric]

Two tests were failing (Mac-latest Python 3.11, 3.12) because they used a version of black that didn't support the Apple Silicon architecture (M1, M2 chips). Starting from version 23.11.0, black resolves this compatibility issue. For more details, refer to this issue.

[micahellison]

Thanks for figuring this out, @eigenric. Looks like the poetry lockfile just needs to be updated to lock in that latest version. I've merged that change into develop (#1856). Could you merge develop into this PR? That should fix the issue and finally get these tests passing.

[micahellison]

Thanks for the PR!