Update actions/checkout digest to c2d88d3

Author: renovate[bot]

.github/workflows/publish.yml

@@ -11,7 +11,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-    - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
+    - uses: actions/checkout@c2d88d3ecc89a9ef08eebf45d9637801dcee7eb5
     - uses: actions/setup-node@v4
       with:
         node-version: 18

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
+    - uses: actions/checkout@c2d88d3ecc89a9ef08eebf45d9637801dcee7eb5
     - uses: actions/setup-node@v4
       with:
         node-version: 22