Update cuda version in release pipeline (microsoft#22305)

### Description
With TensorRT 10.4 update, the name of TensorRT windows package changed


### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

tools/ci_build/github/azure-pipelines/stages/nuget-linux-cuda-packaging-stage.yml

@@ -80,7 +80,7 @@ stages:
       ${{ if eq(parameters.CudaVersion, '11.8') }}:
         value: 10.4.0.26-1.cuda11.8
       ${{ if eq(parameters.CudaVersion, '12.2') }}:
-        value: 10.4.0.26-1.cuda12.5
+        value: 10.4.0.26-1.cuda12.6
     steps:
     - checkout: self
       clean: true

tools/ci_build/github/azure-pipelines/templates/jobs/download_win_gpu_library.yml

@@ -44,7 +44,7 @@ steps:
           displayName: Set trtCudaVersion
     - ${{ if and(eq(parameters.CudaVersion, '12.2'), eq(parameters.TrtVersion, '10.4.0.26')) }}:
         - powershell: |
-            Write-Host "##vso[task.setvariable variable=trtCudaVersion;]12.5"
+            Write-Host "##vso[task.setvariable variable=trtCudaVersion;]12.6"
           displayName: Set trtCudaVersion
 
     - script: |