[external] use debug logs instead of info logs

[root-ansh]

Background

• ActionManager.java class shows less important logs that floods the info filter. setting the log as debug will allow this log to show up only when verbose filter is enabled

Implementation

• replaced Log.i with Log.d

Testing steps

• create a sample app and integrate LeanPlum SDK.
• launch it on a physical device or emulator
• log will show up as debug logs instead.

Is this change backwards-compatible?

• yes