[PLAT-516] feat: Create gitleaks workflow

.github/workflows/gitleaks.yaml

@@ -1,16 +1,14 @@
 name: gitleaks
 on:
-  push:
-  workflow_dispatch:
+  push: {}
 jobs:
   gitleaks:
     name: Run gitleaks
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - uses: gitleaks/gitleaks-action@v2
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_LICENSE }}
+      uses: gitleaks/gitleaks-action@v2
+      with:
+        fetch-depth: 0
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_LICENSE }}