Chore(deps): (deps): Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/onPullRequest-TestDotnet.yml

@@ -12,7 +12,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: Setup .NET
               uses: actions/setup-dotnet@v5

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout repository
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup .NET
               uses: actions/setup-dotnet@v4

.github/workflows/workflow-todo.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: "ubuntu-latest"
     steps:
-      - uses: "actions/checkout@v4"
+      - uses: "actions/checkout@v6"
       - name: "TODO to Issue"
         uses: "alstr/todo-to-issue-action@v5"
         with: