fix: use print() function in both Python 2 and Python 3 (#18395)

Legacy print statements are syntax errors in Python 3 but print() function works as expected in both Python 2 and Python 3.

Old style exceptions are syntax errors in Python 3 but new style exceptions work as expected in both Python 2 and Python 3.

script/get-version.py

@@ -1,11 +1,12 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
 import sys
 
 from lib.util import get_electron_version
 
 def main():
-  print get_electron_version()
+  print(get_electron_version())
 
 if __name__ == '__main__':
   sys.exit(main())