docs: add snap base core22 as an option

[jgresham]

https://snapcraft.io/docs/base-snaps#Choosing%20a%20base

core22 is the currently recommended base for the majority of snaps. But much like choosing a distribution base for a project or server, the best base for an application is dependent on an application’s requirements and which plugins or extensions a base supports. If there are specific dependencies that cannot be easily met with core22 then core20 is a valid and supported alternative, as is the older core18.

[changeset-bot]

🦋 Changeset detected

Latest commit: 0b89831

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
app-builder-lib	Patch
dmg-builder	Patch
electron-builder-squirrel-windows	Patch
electron-builder	Patch
electron-forge-maker-appimage	Patch
electron-forge-maker-nsis-web	Patch
electron-forge-maker-nsis	Patch
electron-forge-maker-snap	Patch

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[jgresham]

will add changeset if this is approved!

[jgresham]

@mmaietta hopefully did this one right too

[mmaietta]

Thanks @jgresham !