chore(deps): update actions/checkout action to v5 (#2383)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/validate.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-node@v4
       with:
         node-version-file: '.nvmrc'
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: tests
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Download code coverage results
       uses: actions/download-artifact@v5
       with: