Update actions/checkout action to v4.2.0

Author: renovate[bot]

.github/workflows/ghcr.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@v4.2.0
 
       - name: Get branch names
         id: branch-name

.github/workflows/update-readme.yml

@@ -9,7 +9,7 @@ jobs:
   sync-assets:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0