Merge pull request #13 from atugushev/deprecated-add-path

Fix removed add-path command

Author: asottile

bin/install-python

@@ -81,7 +81,9 @@ def main() -> int:
                 if _print_call(*cmd):
                     return 1
 
-    print(f'::add-path::{bindir}')
+    with open(os.environ['GITHUB_PATH'], 'a') as fp:
+        fp.write(f'{bindir}\n')
+
     return 0