chore: skip CodeQL if go files have no changes (#636)

Signed-off-by: Ling Samuel <lingsamuelgrace@gmail.com>

.github/workflows/codeql-analysis.yml

@@ -29,10 +29,31 @@ on:
     - cron: '25 5 * * 5'
 
 jobs:
+  changes:
+    runs-on: ubuntu-latest
+    outputs:
+      go: ${{ steps.filter.outputs.go }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - uses: ./.github/actions/paths-filter
+        id: filter
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          filters: |
+            go:
+              - '*.go'
+              - '**/*.go'
   analyze:
     name: Analyze
     runs-on: ubuntu-latest
 
+    needs: changes
+    if: |
+      (needs.changes.outputs.go == 'true')
     strategy:
       fail-fast: false
       matrix: