chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/k8s-diff.yaml

@@ -5,7 +5,7 @@ jobs:
     name: Base
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.event.pull_request.base.sha }}
       - uses: cue-lang/setup-cue@v1.0.0
@@ -18,7 +18,7 @@ jobs:
     name: Head
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - uses: cue-lang/setup-cue@v1.0.0
       - run: cue export ./k8s/magiclove/list.cue > list.json
       - uses: actions/upload-artifact@v3

.github/workflows/test.yaml

@@ -5,6 +5,6 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - uses: cue-lang/setup-cue@v1.0.0
       - run: cue export ./k8s/magiclove/list.cue