* Action update:
- Bump all dependencies
- Rewrite `getLatestHelmVersion()` function without graphql
* Bump stableHelmVersion
* Update readme and action.yaml
* Revert and rewrite with @octokit/action
* Add latest to integration test
* Bump action's versions
* Set github.token as default input
* Replace deprecated jest methods
* Add prettier to dev dependencies, fix prettier issues
* Added version validation check
* Added check for latest
* Changed Helm 3.5.0 test to also test lack of v in version
* Pushing integration tests
* Removed push integration test
* Added more context to integration test
* Addressing comment
