bump emscripten/node

Change-Id: Id439b890dff1f655f6641c31833dd325aea55d47
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/303391
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/infra/bots/bot.py b/infra/bots/bot.py
index de26a51..1477f59 100644
--- a/infra/bots/bot.py
+++ b/infra/bots/bot.py
@@ -47,11 +47,11 @@
   # Get an Emscripten environment all set up.
   call('git clone https://github.com/emscripten-core/emsdk.git')
   os.chdir('emsdk')
-  call('./emsdk install 1.39.4')
+  call('./emsdk install 1.39.19')
   os.chdir('..')
 
   emscripten_sdk = os.path.realpath('emsdk')
-  node = emscripten_sdk + '/node/12.9.1_64bit/bin/node'
+  node = emscripten_sdk + '/node/12.18.1_64bit/bin/node'
 
   em_config = os.path.realpath(os.path.join('.', 'em_config'))
   with open(em_config, 'w') as f: