Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/codeql-analysis.yml

@@ -42,7 +42,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v6
       with:
         fetch-depth: 2
 

.github/workflows/dependency-review.yml

@@ -9,6 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout Repository'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
       - name: 'Dependency Review'
         uses: actions/dependency-review-action@v1

.github/workflows/main.yml

@@ -31,14 +31,14 @@ on:
 
 jobs:
   build-sdk:
-    name: Build (SDK projects) — Ubuntu
+    name: Build (SDK projects) � Ubuntu
     runs-on: ubuntu-latest
     defaults:
       run:
         shell: bash
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
@@ -79,14 +79,14 @@ jobs:
           done
 
   build-legacy:
-    name: Build (Legacy .NET Framework) — Windows
+    name: Build (Legacy .NET Framework) � Windows
     runs-on: windows-latest
     defaults:
       run:
         shell: powershell
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 

.github/workflows/nuget.yml

@@ -28,7 +28,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       with:
         fetch-depth: 10