Fix a typo in action version

[kachkaev]

Follows #420

Fixes https://github.com/blockprotocol/blockprotocol/runs/7235813803?check_suite_focus=true#step:1:35

Error: Unable to resolve action `changesets/action@1.3.0`, unable to find version `1.3.0`

v prefix should help match repo tags at https://github.com/changesets/action/tags. I'm using a pinned version because of:

blockprotocol/.changeset/config.json

Lines 13 to 15 in 9c38dcd

	"___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
	"onlyUpdatePeerDependentsWhenOutOfRange": true
	}