release test_api 0.7.0, test_core 0.6.0, and test 1.25.0

[jakemac53]

The plan is to merge and release these tomorrow, assuming things look good.

[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:test_core	0.6.0	ready to publish	test_core-v0.6.0
package:test_api	0.7.0	ready to publish	test_api-v0.7.0
package:test	1.25.0	ready to publish	test-v1.25.0
package:checks	0.3.0-wip	WIP (no publish necessary)

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[natebosch]

[nit] Typo in the versions in the PR title - please fix before merging 7.0.0 -> 0.7.0, 6.0.0 -> 0.6.0.

I can see an argument that we should be using major versions, but we still haven't bumped to 1.0 for these packages.

[derekxu16]

Can you please include this vm_service constraint update as well: #2157? Thanks!

[jakemac53]

Doing one last sync internally given we just landed a few more things, before merging/publishing