Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/publish.yml

@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
             - name: Setup Node and .npmrc
               uses: actions/setup-node@v3
               with:

.github/workflows/test-and-build.yml

@@ -9,7 +9,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
             - name: Use Rust Cache
               uses: Swatinem/rust-cache@v2
             - name: Install & Build & Test