[deps]: Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/cd.yml

@@ -12,7 +12,7 @@ jobs:
       id-token: write
     steps:
       - name: Check out repo
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
 

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       packages: write
     steps:
       - name: Check out repo
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false