[PersistentStorage.Abstractions] Replace .NET 6 target with .NET 8 for test project (open-telemetry#2162)

Author: joegoldman2

src/OpenTelemetry.PersistentStorage.Abstractions/OpenTelemetry.PersistentStorage.Abstractions.csproj

@@ -2,12 +2,12 @@
 
   <PropertyGroup>
     <!-- OmniSharp/VS Code requires TargetFrameworks to be in descending order for IntelliSense and analysis. -->
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
-    <TargetFrameworks Condition="$(OS) == 'Windows_NT'">$(TargetFrameworks);net462</TargetFrameworks>
-    <Description>OpenTelemetry Persistent Storage Abstractions</Description>
+    <TargetFrameworks>$(NetStandardMinimumSupportedVersion)</TargetFrameworks>
+    <TargetFrameworks Condition="$(OS) == 'Windows_NT'">$(TargetFrameworks);$(NetFrameworkMinimumSupportedVersion)</TargetFrameworks>
+    <Description>OpenTelemetry Persistent Storage Abstractions.</Description>
+    <NoWarn>$(NoWarn);1591</NoWarn>
     <MinVerTagPrefix>PersistentStorage-</MinVerTagPrefix>
     <PackageValidationBaselineVersion>1.0.0</PackageValidationBaselineVersion>
-    <NoWarn>$(NoWarn),1591</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>

test/OpenTelemetry.PersistentStorage.Abstractions.Tests/OpenTelemetry.PersistentStorage.Abstractions.Tests.csproj

@@ -2,8 +2,8 @@
 
   <PropertyGroup>
     <!-- OmniSharp/VS Code requires TargetFrameworks to be in descending order for IntelliSense and analysis. -->
-    <TargetFrameworks>$(SupportedNetTargets)</TargetFrameworks>
-    <TargetFrameworks Condition="$(OS) == 'Windows_NT'">$(TargetFrameworks);net462</TargetFrameworks>
+    <TargetFrameworks>$(SupportedNetTargetsWithoutNet6)</TargetFrameworks>
+    <TargetFrameworks Condition="$(OS) == 'Windows_NT'">$(TargetFrameworks);$(NetFrameworkMinimumSupportedVersion)</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>