chore: Change night-owl to use the inverse powerline arrow head characters.

[HypheX]

Prerequisites

• I have read and understood the contributing guide.
• The commit message follows the conventional commits guidelines.
• Tests for the changes have been added (for bug fixes / features).
• Docs have been added/updated (for bug fixes / features).

Description

Change the night-owl theme to use U+E0D6 and U+E0D7 for the powerline arrow heads added in ryanoasis/nerd-fonts#1490

Before:

After:

[HypheX]

Let me know if I should bump the version field from 3 to 4.

[LuminarLeaf]

Let me know if I should bump the version field from 3 to 4.

No, that version is for the config file syntax schema version, version 4 doesn't even exist yet

[JanDeDobbeleer]

@all-contributors please add @HypheX for design

This is pure magic 🪄! @holopin-bot @HypheX wizard

[holopin-bot]

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[allcontributors]

@JanDeDobbeleer

I've put up a pull request to add @HypheX! 🎉