Update github checkout action

Author: N3xed

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
 
     steps:
       - name: Setup | Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup | Rust
         uses: dtolnay/rust-toolchain@master

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
   create-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: taiki-e/create-gh-release-action@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -26,7 +26,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: taiki-e/upload-rust-binary-action@v1
         with:
           bin: ddns-update-daemon