ggh4x 0.2.7: Brick-shaped Telephones

This is a small release for future compatibility with ggplot2, along with some
bugfixes.

• Anticipatory changes for ggplot2 3.5.0.
• force_panelsizes() can now take 'bigpts' units as total_width or total_height
  arguments (#118)
• Fixed bug in facet_nested() when margins = TRUE (#121)
• Fix bug related to mixing standard scales and facetted scales (#137)