Update actions/checkout to v7 (#103)

Author: renovate[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: Build & Test (${{ matrix.os }})
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Node.js
         uses: actions/setup-node@v6

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Node.js
         uses: actions/setup-node@v6

.github/workflows/typecheck.yml

@@ -14,7 +14,7 @@ jobs:
     name: Typecheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Node.js
         uses: actions/setup-node@v6