chore(deps): update actions/checkout action to v5 (#42)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
 
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: Set up Rust toolchain
               run: rustup toolchain install stable --no-self-update --profile default --target wasm32-unknown-unknown

.github/workflows/website.yml

@@ -14,7 +14,7 @@ jobs:
         name: Test Book
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
 
             - name: Set up Rust toolchain
               run: |
@@ -42,7 +42,7 @@ jobs:
         needs: book-test
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                   fetch-depth: 0
 
@@ -92,7 +92,7 @@ jobs:
             pages: write
             id-token: write
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                   fetch-depth: 0