Bump the github-actions group across 1 directory with 3 updates

Bumps the github-actions group with 3 updates in the / directory: [actions/checkout](https://github.com/actions/checkout), [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

Updates `actions/download-artifact` from 5 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/deploy-packages.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Get code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # We need the full history in order to use Git versioning
 
@@ -32,7 +32,7 @@ jobs:
           dotnet publish /p:SourceRevisionId=${{ github.sha }}
 
       - name: Upload build
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: bin
           path: .artifacts/package
@@ -47,7 +47,7 @@ jobs:
           dotnet-version: "8.0.*"
 
       - name: Download build
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
         with:
           name: bin
           path: .artifacts/package

.github/workflows/deploy-planner.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Get code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # We need the full history in order to use Git versioning
 
@@ -49,7 +49,7 @@ jobs:
           Squirrel pack --framework net6.0,vcredist143-x86 --packId "NetUpgradePlanner" --packTitle ".NET Upgrade Planner" --packVersion "${{ steps.nbgv.outputs.SemVer1 }}" --packAuthors "Immo Landwerth" --packDir "." -r "../../squirrel-release"
 
       - name: Upload build
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: squirrel-release
           path: .artifacts/squirrel-release
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download build
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
         with:
           name: squirrel-release
           path: .artifacts/squirrel-release

.github/workflows/gen-catalog.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Get code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0 # We need the full history in order to use Git versioning
 

.github/workflows/gen-design-notes.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Get code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0 # We need the full history in order to use Git versioning
 

.github/workflows/gen-usage.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Get code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0 # We need the full history in order to use Git versioning
     - name: Get .NET
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Get code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0 # We need the full history in order to use Git versioning
     - name: Get .NET
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Get code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0 # We need the full history in order to use Git versioning
     - name: Get .NET