update package version and enable latest nuget in pipeline

Author: itn3000

PooledStream/PooledStream.csproj

@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.1;netstandard1.1</TargetFrameworks>
     <!-- <TargetFramework>netstandard2.1</TargetFramework> -->
     <PackageId>PooledStream</PackageId>
-    <PackageVersion>0.2.1</PackageVersion>
+    <PackageVersion>0.2.1.1</PackageVersion>
     <Authors>itn3000</Authors>
     <Description>Efficient MemoryStream powered by System.Buffers.ArrayPool</Description>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>

azure-pipelines.yaml

@@ -55,6 +55,10 @@ stages:
           vmImage: windows-2019
         displayName: "Publish to nuget.org and github"
         steps:
+          - task: NuGetToolInstaller@0
+            displayName: enable nuget-5.3.1
+            inputs:
+              versionSpec: "5.3.1"
           - task: DownloadPipelineArtifact@2
             displayName: download nupkg artifacts
             inputs: