update emscripten/node

Tested with this patch on Mac,

    $ cat ~/em_config
    LLVM_ROOT = '/Users/mtklein/emsdk/upstream/bin'
    BINARYEN_ROOT = '/Users/mtklein/emsdk/upstream'
    EMSCRIPTEN_ROOT = '/Users/mtklein/emsdk/upstream/emscripten'
    NODE_JS = '/Users/mtklein/emsdk/node/14.15.5_64bit/bin/node'
    COMPILER_ENGINE = NODE_JS
    JS_ENGINES = [NODE_JS]

    $ git diff
    diff --git a/ninja/emscripten b/ninja/emscripten
    index 6961beb..4e94332 100644
    --- a/ninja/emscripten
    +++ b/ninja/emscripten
    @@ -16,4 +16,8 @@ rule run

     include ninja/common

    -disabled = (uname | grep -qv Linux)
    +disabled = false
    +
    +cc = env EM_CONFIG=/Users/mtklein/em_config /Users/mtklein/emsdk/upstream/emscripten/emcc
    +cxx = env EM_CONFIG=/Users/mtklein/em_config /Users/mtklein/emsdk/upstream/emscripten/em++
    +node = /Users/mtklein/emsdk/node/14.15.5_64bit/bin/node

I tested this on Mac, so I might make the Mac bots do this too.

Change-Id: I5a10167d00d0928d7e27516a771159aa2b2d700e
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/374159
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/infra/bots/bot.py b/infra/bots/bot.py
index 1c33d1c..faacbf3 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 1.39.19')
+  call('./emsdk install 2.0.14')
   os.chdir('..')
 
   emscripten_sdk = os.path.realpath('emsdk')
-  node = emscripten_sdk + '/node/12.18.1_64bit/bin/node'
+  node = emscripten_sdk + '/node/14.15.5_64bit/bin/node'
 
   em_config = os.path.realpath(os.path.join('.', 'em_config'))
   with open(em_config, 'w') as f: