feat(plugin-npm): support OIDC auth for CircleCI (#7075)

## What's the problem this PR addresses?

CircleCI was recently added as a supported [npm trusted
publisher](https://docs.npmjs.com/trusted-publishers) provider, but
Yarn's OIDC implementation only supports GitHub Actions and GitLab CI.

The upstream npm CLI already supports CircleCI in
[`lib/utils/oidc.js`](https://github.com/npm/cli/blob/latest/lib/utils/oidc.js)
(checking `ciInfo.CIRCLE`). Since Yarn's implementation was [adapted
from the npm
CLI](https://github.com/yarnpkg/berry/blob/7ccf6e3da18d77d36a426d004babf8553639defa/packages/plugin-npm/sources/npmHttpUtils.ts#L587-L591),
it should be updated to match.

Closes #7074.

## How did you fix it?

Added detection of the `CIRCLECI` environment variable in
`getOidcToken()`. Like GitLab CI, CircleCI sets the `NPM_ID_TOKEN`
environment variable, so the implementation follows the same pattern.

Note: The upstream npm CLI notes that CircleCI doesn't support
provenance yet, so the auto-provenance logic in #7017 / #7018 naturally
skips CircleCI (no visibility env var to check).

## Checklist

- [x] I have read the [Contributing
Guide](https://yarnpkg.com/advanced/contributing).
- [x] I have set the packages that need to be released for my changes to
be effective.
- [x] I will check that all automated PR checks pass before the PR gets
reviewed.

Co-authored-by: Maël Nison <nison.mael@gmail.com>

Author: blimmer

.yarn/versions/3f01b356.yml

@@ -0,0 +1,24 @@
+releases:
+  "@yarnpkg/cli": minor
+  "@yarnpkg/plugin-npm": minor
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-init"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-version"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/core"
+  - "@yarnpkg/doctor"

packages/plugin-npm/sources/npmHttpUtils.ts

@@ -595,6 +595,8 @@ async function getOidcToken(registry: string, {configuration, ident}: {configura
 
   if (process.env.GITLAB_CI) {
     idToken = process.env.NPM_ID_TOKEN || null;
+  } else if (process.env.CIRCLECI) {
+    idToken = process.env.NPM_ID_TOKEN || null;
   } else if (process.env.GITHUB_ACTIONS) {
     if (!(process.env.ACTIONS_ID_TOKEN_REQUEST_URL && process.env.ACTIONS_ID_TOKEN_REQUEST_TOKEN))
       return null;