Update actions/checkout digest to 9bb5618 (#76)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://togithub.com/actions/checkout) | action |
digest | `b4ffde6` -> `9bb5618` |

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Automerge - At any time (no schedule defined).

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Author: lettuce-bot[bot]

.github/workflows/auto-merge.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4
 
       - name: Create app token
         id: create-app-token

.github/workflows/pull-request.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4
 
       - name: Setup buildx
         uses: docker/setup-buildx-action@0d103c3126aa41d772a8362f6aa67afac040f80c # v3