Update ktlint.py hashbang to Python 3

Change-Id: I3b3b5064c8d52ddd241785914ae1e58b8d2150e1
Test: Run ktlint as a repo hook
Bug: 186749906
1 file changed
tree: bc40932100385b82c124856746e4b21176c71ed4
  1. ktlint-android-all.jar
  2. ktlint.py
  3. LICENSE