chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/build-test.yml

@@ -19,7 +19,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Clone airnode
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check hyperlinks
         uses: gaurav-nelson/github-action-markdown-link-check@v1
         with:
@@ -31,7 +31,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Clone airnode
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Required for changesets check. See: https://github.com/changesets/changesets/issues/517#issuecomment-813282523
           fetch-depth: 0

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/protocol-verify.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone airnode
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Required for changesets check. See: https://github.com/changesets/changesets/issues/517#issuecomment-813282523
           fetch-depth: 0