refactor: Stop suppressing unnecessarily TruelyRandom lints

[breautek]

Platforms affected

Android

Motivation and Context

Fixes #638

Description

The issue is an older issue that pointed out that SecureRandom isn't actually secure on android devices pre 4.4. As it's been not supported for such time, it's safe to remove the @suppressLint TruelyRandom, which will provide us insurance that this method is not modified in an insecure manner in the future.

Testing

Ran npm test.

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary