Roll GN from 0d67e272..595e3be7

Generated by //tools/gn/roll_gn.py

https://gn.googlesource.com/gn/+log/0d67e272..595e3be7

    595e3be7 Find python/python3 from dotfile entries

Bug: chromium:1112471
Change-Id: Iaa80f88464845094a73f4e312b445dc32b963caa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622896Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#842272}

DEPS

@@ -364,7 +364,7 @@ vars = {
   # revisions.
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:0d67e272bdb8145f87d238bc0b2cb8bf80ccec90',
+  'gn_version': 'git_revision:595e3be7c8381d4eeefce62a63ec12bae9ce5140',
 
   # Also, if you change these, update buildtools/DEPS too. Also update the
   # libc++ svn_revision in //buildtools/deps_revisions.gni.

buildtools/DEPS

@@ -14,7 +14,7 @@ vars = {
   #
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:0d67e272bdb8145f87d238bc0b2cb8bf80ccec90',
+  'gn_version': 'git_revision:595e3be7c8381d4eeefce62a63ec12bae9ce5140',
 
   # By default, do not checkout the re-client binaries.
   'checkout_reclient': False,