added step tp install mono

Author: v-rachitsh

.azdo/pipelines/stages/release.yml

@@ -10,15 +10,6 @@ parameters:
     default: microsoft/azure-health-data-services-toolkit
 
 stages:
-  - stage: InstallMonoPrereq
-    jobs:
-    - job: InstallMonoAndRelease
-      steps:
-      - script: |
-          sudo apt update
-          sudo apt install -y mono-complete
-        displayName: 'Install Mono on Ubuntu'
-    
   - stage: ${{ format('Signing_{0}', parameters.PackageArtifactName) }}
     displayName: 'Sign Code & Packages'
     dependsOn: Build

.azdo/pipelines/steps/package-push-internal.yml

@@ -13,6 +13,11 @@ steps:
     }
   displayName: 'Ensure provided ArtifactPath exists'
 
+- script: |
+    sudo apt update
+    sudo apt install -y mono-complete
+  displayName: 'Install Mono on Ubuntu'
+
 - task: NuGetCommand@2
   displayName: 'Publish ${{ parameters.PackageName }} package to DevOps Feed'
   inputs: