Added .NET 7.0 support for release pipelines (#6288) (#6289)

* Added .NET 7.0 support for nightly build pipelines

* added .NET 7 to release pipeline also

Author: Aaronontheweb

build-system/nightly-builds.yaml

@@ -19,6 +19,10 @@ variables:
   - group: nugetKeys #create this group with SECRET variables `nugetKey`
 
 steps:
+- task: UseDotNet@2
+  displayName: 'Use .NET 7 SDK 7.0.100'
+  inputs:
+    version: 7.0.100
 - task: UseDotNet@2
   displayName: 'Use .NET 5 SDK 6.0.100'
   inputs:
@@ -32,4 +36,4 @@ steps:
   displayName: 'FAKE Build'
   inputs:
     filename: build.cmd
-    arguments: 'Nuget nugetprerelease=dev nugetpublishurl=$(nightlyUrl) nugetkey=$(nightlyKey)'
+    arguments: 'Nuget nugetprerelease=dev nugetpublishurl=$(nightlyUrl) nugetkey=$(nightlyKey)'

build-system/windows-release.yaml

@@ -22,6 +22,10 @@ variables:
   - name: githubRepositoryName
     value: akkadotnet/akka.net
 steps:
+- task: UseDotNet@2
+  displayName: 'Use .NET 7 SDK 7.0.100'
+  inputs:
+    version: 7.0.100
 - task: UseDotNet@2
   displayName: 'Use .NET 6 SDK 6.0.100'
   inputs: