bump: v0.27.0 rc.2

[alexruzenhack]

Acceptance Criteria

• bump: v0.27.0-rc.2

Checklist

• [x] Make sure you updated the CURRENT_PROJECT_VERSION with the appropriate release-candidate version in ios/HathorMobile.xcodeproj/project.pbxproj
• [x] Make sure you updated the MARKETING_VERSION with the appropriate version in ios/HathorMobile.xcodeproj/project.pbxproj
• [x] Make sure you updated the version attribute in package.json
• [x] Make sure you updated the version attribute in package-lock.json
• [x] Make sure you incremented the versionCode attribute in android/app/build.gradle
• [x] Make sure you updated the versionName with the appropriate version, including the release candidate number in android/app/build.gradle