Bump actions/setup-dotnet from 5 to 6

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5 to 6.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](https://github.com/actions/setup-dotnet/compare/v5...v6)

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

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

.github/workflows/cd-cdk.yaml

@@ -62,7 +62,7 @@ jobs:
       - uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4
         if: ${{ inputs.enable-qemu }}
 
-      - uses: actions/setup-dotnet@v5
+      - uses: actions/setup-dotnet@v6
         if: ${{ inputs.dotnet-version != '' }}
         with:
           dotnet-version: ${{ inputs.dotnet-version }}

.github/workflows/ci-dotnet.yaml

@@ -33,7 +33,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
 
-      - uses: actions/setup-dotnet@v5
+      - uses: actions/setup-dotnet@v6
         with:
           dotnet-version: ${{ inputs.dotnet-version }}
 

.github/workflows/ci-typescript-cdk.yaml

@@ -69,7 +69,7 @@ jobs:
       - uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4
         if: ${{ inputs.enable-qemu }}
 
-      - uses: actions/setup-dotnet@v5
+      - uses: actions/setup-dotnet@v6
         if: ${{ inputs.dotnet-version != '' }}
         with:
           dotnet-version: ${{ inputs.dotnet-version }}