chore: Update the permissions for PR reporting.

[musale]

Closes #3006

PR Type

• Build or CI related changes

Description of the changes

contents: read - allows reading commits of the pr
checks: write - reports the status of the job on the pr
id-token: write - dorny/test-reporter@v1 uses the token for OIDC, this allows fetching it.

PR checklist

• Project builds (yarn build) and changes have been tested in at least two supported browsers (Edge + non-Chromium based browser)
• All public APIs (classes, methods, etc) have been documented following the jsdoc syntax
• Stories have been added and existing stories have been tested
• Added appropriate documentation. Docs PR:

• License header has been added to all new source files (yarn setLicense)
• Contains NO breaking changes

Other information

• Current PR reporting will ALWAYS fails as this PR will run the old workflow steps.
• Merge to main and then check the actions tab to ensure that this change passes the workflow https://github.com/microsoftgraph/microsoft-graph-toolkit/actions