github-action: bump actions/checkout from 4.0.0 to 4.1.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.0.0 to 4.1.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@3df4ab1...8ade135)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/check_gpg_keys.yml

@@ -10,7 +10,7 @@ jobs:
     outputs:
       key_ids: ${{ steps.extract-key-ids.outputs.key_ids }}
     steps:
-      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
       - name: Extract key ids from .gpg-id and output as a json list
         id: extract-key-ids
         run: echo "key_ids=$(jq -c --raw-input --slurp 'split("\n") | map(select(. != ""))' .gpg-id)" >> $GITHUB_OUTPUT
@@ -25,6 +25,6 @@ jobs:
     env:
       GPG_KEY_ID: ${{ matrix.key_id }}
     steps:
-      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
       - name: Import key from keyserver
         run: make .download-gpg-key

.github/workflows/generate_buildpack_bump_pr.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       ## Setup
       - name: Checkout repo
-        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
         with:
           submodules: true
           # auth will be retained by repo configuration

.github/workflows/test_on_pr.yml

@@ -26,7 +26,7 @@ jobs:
     steps:
       ## Setup
       - name: Checkout repo
-        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
         with:
           submodules: true