chore: upgrade developmemt node version to v16 (#5167)

Co-authored-by: yufeng.freeman <[email protected]>

Author: F3n67u

.node-version

@@ -1 +1 @@
-14
+16

docs/CONTRIBUTING.md

@@ -31,7 +31,7 @@ for [VS
 Code](https://github.com/Microsoft/vscode/wiki/How-to-Contribute#prerequisites).
 Here is what is needed:
 
-- `node` v14.x
+- `node` v16.x
 - `git` v2.x or greater
 - [`git-lfs`](https://git-lfs.github.com)
 - [`yarn`](https://classic.yarnpkg.com/en/)