Bump actions/checkout from 3.5.3 to 4.0.0 (#160)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.3 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@c85c95e...3df4ab1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/kind-e2e.yaml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
     - name: Check out hakn
-      uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v3
       with:
         path: ./src/github.com/chainguard-dev/hakn
 

.github/workflows/knative-boilerplate.yaml

@@ -50,7 +50,7 @@ jobs:
         id: go
 
       - name: Check out code
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v3
 
       - name: Install Tools
         run: |

.github/workflows/knative-donotsubmit.yaml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v3
 
       - name: Do Not Submit
         shell: bash

.github/workflows/knative-vulnerability.yaml

@@ -26,7 +26,7 @@ jobs:
   snyk:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 
       - name: Run Snyk to check for vulnerabilities
         uses: snyk/actions/golang@master

.github/workflows/release.yaml

@@ -18,7 +18,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           fetch-depth: 1