* make "role" input optional Per Vault documentation it doesn't have to be provided, and the auth provider's "default_role" parameter is required precisely for this case. https://www.vaultproject.io/api/auth/jwt
* fix: update `privateKeyRaw` condition * fix: add `contents: read` permission * fix: get token via `@actions/core` - Update README - Switch to use `getIDToken` method for Github token retrieval - Bump `@actions/core` to 1.6.0 - Add `jwtGithubAudience` input - Remove unnecessary code * fix: add description for `jwtGithubAudience` * fix: move default value for `jwtGithubAudience` to `action.yml` * docs: fix typo in README & grammar * test: add tests * fix: reset `dist/index.js` * fix: remove default value for `jwtGithubAudience` from `action.yml` * fix: reset `dist/index.js` * fix: reset `dist/index.js`
