Runner v2.276.0 fixes (#928)

* Revert "always use Fips Cryptography (#896)"

3b34e203dc

* Revert "Update ldd check with dotnet 5."

4b6ded0a01

* Revert "Update SDK to .NET 5 (#799)"

fc3ca9bb92

* Update dotnet-install scripts

src/Runner.Listener/Configuration/ConfigurationManager.cs

@@ -263,6 +263,7 @@ namespace GitHub.Runner.Listener.Configuration
                     {
                         { "clientId", agent.Authorization.ClientId.ToString("D") },
                         { "authorizationUrl", agent.Authorization.AuthorizationUrl.AbsoluteUri },
+                        { "requireFipsCryptography", agent.Properties.GetValue("RequireFipsCryptography", false).ToString() }
                     },
                 };
 

src/Runner.Listener/Configuration/OAuthCredential.cs

@@ -36,7 +36,7 @@ namespace GitHub.Runner.Listener.Configuration
             // We expect the key to be in the machine store at this point. Configuration should have set all of
             // this up correctly so we can use the key to generate access tokens.
             var keyManager = context.GetService<IRSAKeyManager>();
-            var signingCredentials = VssSigningCredentials.Create(() => keyManager.GetKey(), requireFipsCryptography: true);
+            var signingCredentials = VssSigningCredentials.Create(() => keyManager.GetKey(), StringUtil.ConvertToBoolean(CredentialData.Data.GetValueOrDefault("requireFipsCryptography"), false));
             var clientCredential = new VssOAuthJwtBearerClientCredential(clientId, authorizationUrl, signingCredentials);
             var agentCredential = new VssOAuthCredential(new Uri(oauthEndpointUrl, UriKind.Absolute), VssOAuthGrant.ClientCredentials, clientCredential);
 

src/Runner.Listener/Runner.Listener.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>