Apply suggestions from code review

Author: jfversluis

.github/workflows/benchmarks.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@main
+        uses: actions/checkout@4
 
       - uses: maxim-lobanov/setup-xcode@v1
         if: runner.os == 'macOS'

.github/workflows/dotnet-build.yml

@@ -44,7 +44,7 @@ jobs:
         os: [windows-latest, macos-15]
     steps:
       - name: Checkout code
-        uses: actions/checkout@main
+        uses: actions/checkout@4
 
       - name: Set Latest Xcode Version
         if: runner.os == 'macOS'
@@ -89,7 +89,7 @@ jobs:
         os: [windows-latest, macos-15]
     steps:
       - name: Checkout code
-        uses: actions/checkout@main
+        uses: actions/checkout@4
 
       - name: Set NuGet Version to Tag Number
         if: startsWith(github.ref, 'refs/tags/')