Upgrade @actions/github to ^6.0.1

[jtbandes]

Resolves #566

[Copilot]

Pull request overview

This PR upgrades the @actions/github package from version 6.0.0 to 6.0.1, resolving issue #566. This upgrade brings in updated dependencies from the Octokit ecosystem and includes a new runAttempt field in the GitHub Actions context.

• Updated @actions/github to 6.0.1 with associated dependency version bumps
• Rebuilt distribution bundle with the latest dependency code
• Added new runAttempt property to the GitHub Actions Context

Reviewed changes

Copilot reviewed 1 out of 3 changed files in this pull request and generated no comments.

File	Description
package.json	Updated @actions/github dependency version from ^6.0.0 to ^6.0.1
package-lock.json	Updated lockfile with new versions of @actions/github and its transitive dependencies including @octokit/endpoint, @octokit/plugin-paginate-rest, @octokit/plugin-rest-endpoint-methods, @octokit/request, and @octokit/request-error; removed is-plain-object package as it's now inlined
dist/index.js	Rebuilt distribution bundle incorporating updated dependency code, including new runAttempt field in Context class, updated API endpoints, and inlined isPlainObject utility function

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