build(deps): bump actions/checkout from 3.3.0 to 3.4.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@ac59398...24cb908)

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

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

Author: dependabot[bot]

.github/workflows/check-upstream-ed25519.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out repository
-      uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
+      uses: actions/checkout@24cb9080177205b6e8c946b17badbe402adc938f
     - name: Test if ed25519 upstream main HEAD is what we expect
       id: test_ed25519
       run: |

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: Checkout securesystemslib
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
+        uses: actions/checkout@24cb9080177205b6e8c946b17badbe402adc938f
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435

.github/workflows/test-kms.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout securesystemslib
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
+        uses: actions/checkout@24cb9080177205b6e8c946b17badbe402adc938f
 
       - name: Set up Python
         uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435

.github/workflows/test-sigstore.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout securesystemslib
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
+        uses: actions/checkout@24cb9080177205b6e8c946b17badbe402adc938f
 
       - name: Set up Python
         uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435