Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3.6.0
+      - uses: actions/checkout@v4.1.2
 
       - uses: pnpm/action-setup@v2.4.0
         with:
@@ -43,7 +43,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3.6.0
+      - uses: actions/checkout@v4.1.2
 
       - uses: pnpm/action-setup@v2.4.0
         with:
@@ -77,7 +77,7 @@ jobs:
           - embroider-optimized
 
     steps:
-      - uses: actions/checkout@v3.6.0
+      - uses: actions/checkout@v4.1.2
 
       - uses: pnpm/action-setup@v2.4.0
         with:

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3.6.0
+      - uses: actions/checkout@v4.1.2
       - uses: actions/setup-node@v3.8.2
         with:
           node-version: 18.x