firebase-admin-node: Conflicting Types for @types/node when using node 14

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[REQUIRED] Step 2: Describe your environment

• Operating System version: Windows
• Firebase SDK version: firebase-admin@9.4.2
• Firebase Product: firebase-admin
• Node.js version: 14.2.0
• NPM version: 6.14.4

[REQUIRED] Step 3: Describe the problem

When using node 14 with typescript’s @types/node@14.14.16, attempting to compile with tsc gives a conflicting definition of ‘node’ error:

I need to use node 14 because something in fs-extra is broken in node 12.

Steps to reproduce:

1. Upgraded node version to node 14
2. Upgraded node types to @types/node@latest to fix fs-extra error in node 12
3. Ran tsc - got the conflicting node error

Relevant Code:

  "dependencies": {
    "@types/node": "^14.14.16",
...
    "firebase-admin": "^9.4.2",