Tweak configuration for CodeQL analysis (#1897)

.github/codeql/codeql-config.yml

@@ -0,0 +1,6 @@
+---
+paths-ignore:
+  - "example"
+  - "integration-tests"
+  - "packages/**/test"
+  - "packages/**/data"

.github/workflows/codeql-analysis.yml

@@ -2,7 +2,7 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [master, ]
+    branches: [master]
   pull_request:
     # The branches below must be a subset of the branches above
     branches: [master]
@@ -17,23 +17,20 @@ jobs:
   analyse:
     name: Analyse
     runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
 
     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' }}
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v2
+      with:
+        config-file: ./.github/codeql/codeql-config.yml
       # Override language selection by uncommenting this and choosing your languages
       # with:
       #   languages: go, javascript, csharp, python, cpp, java