chore: change snapshot release

[tatomyr]

What/Why/How?

Simplified the snapshot release process to avoid extra PRs and comparisons to main.
Now, only code from a labeled branch will be released under the snapshot tag.
No one outside the organization can add a label anyway.

Also, made run the changeset check only on PRs to the main branch.

Testing

Test in this PR.

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

⚠️ No Changeset found

Latest commit: a8805bf

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
redocly lint packages/core/src/benchmark/benches/rebilly.yaml	962.1 ± 21.6	935.9	1002.3	1.02 ± 0.03
redocly-next lint packages/core/src/benchmark/benches/rebilly.yaml	947.0 ± 13.3	932.4	967.1	1.00

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	80.91%	7036/8696
🟡	Branches	69.71%	2934/4209
🟡	Functions	76.4%	1149/1504
🟢	Lines	81.33%	6711/8252

Test suite run success

1338 tests passing in 193 suites.

Report generated by 🧪jest coverage report action from a8805bf

[github-actions]

📦 A new experimental 🧪 version v0.0.0-snapshot.1741296362 of Redocly CLI has been published for testing.

Install with NPM:

npm install @redocly/cli@0.0.0-snapshot.1741296362
# or
npm install @redocly/openapi-core@0.0.0-snapshot.1741296362
# or
npm install @redocly/respect-core@0.0.0-snapshot.1741296362

⚠️ Note: This is a development build and may contain unstable features.