Update dependabot action template (#934)

Author: dsimansk

pkg/dependabotgen/dependabotgen.go

@@ -322,7 +322,7 @@ jobs:
     if: ${{ github.actor == 'dependabot[bot]' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref }}
           path: ./src/github.com/${{ github.repository }}