Enable UseProperAssertMethodsAnalyzer by default (#4076)

src/Analyzers/MSTest.Analyzers/AnalyzerReleases.Unshipped.md

@@ -5,4 +5,4 @@
 
 Rule ID | Category | Severity | Notes
 --------|----------|----------|-------
-MSTEST0037 | `Usage` | Disabled | UseProperAssertMethodsAnalyzer
+MSTEST0037 | `Usage` | Info | UseProperAssertMethodsAnalyzer

src/Analyzers/MSTest.Analyzers/UseProperAssertMethodsAnalyzer.cs

@@ -63,7 +63,7 @@ internal sealed class UseProperAssertMethodsAnalyzer : DiagnosticAnalyzer
         null,
         Category.Usage,
         DiagnosticSeverity.Info,
-        isEnabledByDefault: false);
+        isEnabledByDefault: true);
 
     public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics { get; }
         = ImmutableArray.Create(Rule);