Update actions/checkout action to v7

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     # is done on Linux (linux-x64) as the representative AOT platform.
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
@@ -83,7 +83,7 @@ jobs:
     # only on Windows, so its test suite stays on a Windows agent.
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
@@ -109,7 +109,7 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
 

.github/workflows/publish.yml

@@ -11,7 +11,7 @@ jobs:
       id-token: write
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       # A tag can be pushed with a failing build (GitHub's branch protection does
       # not cover tags), so gate publishing on the tagged commit's CI checks.