Log Message:
py-prompt_toolkit2: updated to 3.0.7

3.0.7:

New features:
- New "placeholder" parameter added to `PromptSession`.

Other changes:
- The "respond to CPR" logic has been moved from the `Input` to `Output`
  classes (this does clean up some code).

Fixes:
- Bugfix in shift-selection key bindings.
- Fix hight calculation of `FormattedTextControl` when line wrapping is turned
  on.
- Fixes for SSH server:
  * Missing encoding property.
  * Fix failure in "set_line_mode" call.
  * Handle `BrokenPipeError`.