v1.38.6

Plots v1.38.6

Diff since v1.38.5

Closed issues:

• [BUG] Markers are at wrong places in 3d plot when xflip = true (#4355)
• [FR] use package extensions (#4589)
• typos (#4662)

Merged pull requests:

• package extensions - weak deps (#4649) (@t-bltg)
• Update possible values for :ticks, :colorbar_ticks in documentation (#4656) (@Socob)
• fix typos (#4663) (@spaette)
• PythonPlot: fix cmap (#4665) (@t-bltg)
• PythonPlot: fix cmap (#4666) (@t-bltg)
• restore Plots.unzip (#4670) (@t-bltg)
• gr: add support for user fonts (#4671) (@jheinen)
• Silence precompilation process (#4672) (@giordano)