Update codeql.yml (#32125)

Specify the branches and clean up the comments

.github/workflows/codeql.yml

-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
 name: "CodeQL"
 
 on:
   push:
-    branches-ignore:
-      - "dependabot/**"
+    branches:
+      - main
+      - v4-dev
+      - "!dependabot/**"
   pull_request:
+    # The branches below must be a subset of the branches above
+    branches:
+      - main
+      - v4-dev
   schedule:
     - cron: "0 2 * * 5"
 
@@ -18,15 +19,6 @@ jobs:
     name: Analyze
     runs-on: ubuntu-latest
 
-    strategy:
-      fail-fast: false
-      matrix:
-        # Override automatic language detection by changing the below list
-        # Supported options are ['csharp', 'cpp', 'go', 'java', 'javascript', 'python']
-        language: ["javascript"]
-        # Learn more...
-        # https://docs.github.com/en/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#overriding-automatic-language-detection
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -44,27 +36,10 @@ jobs:
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v1
         with:
-          languages: ${{ matrix.language }}
-          # If you wish to specify custom queries, you can do so here or in a config file.
-          # By default, queries listed here will override any specified in a config file.
-          # Prefix the list here with "+" to use these queries and those in the config file.
-          # queries: ./path/to/local/query, your-org/your-repo/queries@main
+          languages: "javascript"
 
-      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-      # If this step fails, then you should remove it and run the build manually (see below)
       - name: Autobuild
         uses: github/codeql-action/autobuild@v1
 
-      # ℹ️ Command-line programs to run using the OS shell.
-      # 📚 https://git.io/JvXDl
-
-      # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-      #    and modify them (or add more) to build your code if your project
-      #    uses a compiled language
-
-      #- run: |
-      #   make bootstrap
-      #   make release
-
       - name: Perform CodeQL Analysis
         uses: github/codeql-action/analyze@v1