chore: prepare v20 release

[timdeschryver]

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What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
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[brandonroberts]

These should be 20.0.0-beta.0 right?

Suggested change

	"version": "20.0.0",
	"version": "20.0.0-beta.0",

[timdeschryver]

Oops, I was a bit too excited. Thanks!

[yousafravian]

Is this PR marked for merge?

[yousafravian]

@markostanimirovic I would appreciate it if you could take a look at this or delegate it to someone who can. Thank you!

cc: @brandonroberts

[rainerhahnekamp]

Looks good to me 👍