Update CI

* remove `CI` env variable; it's already set by the runner
* update to actions/setup-node@v2
* specify `FORCE_COLOR: 2`
* update codeql.yml to the latest recommended

Author: XhmikosR

.github/workflows/ci.yml

@@ -1,7 +1,9 @@
 name: CI
+
 on: [push, pull_request]
+
 env:
-  CI: true
+  FORCE_COLOR: 2
   NODE: 14.x
   RUBY: 2.7
 
@@ -14,7 +16,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: "${{ env.NODE }}"
 

.github/workflows/codeql.yml

@@ -19,15 +19,6 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
-        with:
-          # We must fetch at least the immediate parents so that if this is
-          # a pull request then we can checkout the head.
-          fetch-depth: 2
-
-      # If this run was triggered by a pull request event, then checkout
-      # the head of the pull request instead of the merge commit.
-      - run: git checkout HEAD^2
-        if: ${{ github.event_name == 'pull_request' }}
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL